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| special advertising sections |
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Photo courtesy of
AGPS Architecture. |
Transportation
Agitation
Growth Continues Despite Funding Lag
Expansion, continuous improvement
and money remain the salient needs of transportation
systems today. As the demand for new initiatives
grows, so also grow the funding challenges. Yet
growth continues and funding happens, just not
keeping pace with the expectations of many.
The safety of our traveling public remains
the nations highest transportation priority,
says Max Crumit, P.E., PBS&Js national
service director of transportation. With
increased congestion and aging infrastructure,
we have some big challenges ahead. Fortunately,
with new technologies and creative problem solving,
were in an excellent position to address
the safety and mobility needs of the country.

Photo courtesy of
GOMACO. |
Airports Soaring

Photo courtesy of
© John Livzey for DMJM Harris. |
According to the Airports
Council International-North America (ACI-NA),
more than 1.46 billion passengers traveled through
airports in 2004. Both passenger traffic and cargo
grew by 8% and 5% respectively. The Air Transport
Association (ATA) is expecting approximately 200
million passenger enplanements on our nation's
airlines (400 million passengers through airports)
between Memorial Day and Labor Day, which is a
4.1% increase over the same period in 2004.

Photo courtesy of
American Association of Port Authorities. |
The aviation system
now has to accommodate record numbers of passengers
and it is more important than ever that we have
funding to meet airport and system needs,
says ACI-NA president David Z. Plavin. Unfortunately,
the current FAA budget proposal leaves a significant
gap in the funding necessary for the entire aviation
industry infrastructure. Accordingly, ACI-NA and
member airports will work harder than ever this
year to get a budget that ensures critical safety
and capacity projects are built and passengers
receive the level of service they deserve,
he adds.
Port-Ability
| Transportation
Resources |
| Airport
Consultants Council |
acconline.org |
| American
Council of Engineering Cos. |
acec.org |
| American
Road & Transportation Builders Association |
artba.org |
| Build
Indiana Council |
buildindianacouncil.org |
| Floridians
for Better Transportation |
bettertransportation.org |
| Georgians
for Better Transportation |
ciclt.com/gbt |
| International
Bridge, Tunnel & Turnpike Association |
ibtta.org |
| Iowa
Good Roads Association |
515-284-7410 |
| Kentuckians
for Better Transportation |
kbtnet.org |
| Maine
Better Transportation Association |
mbtaonline.org |
| Marylanders
for Efficient & Safe Highways |
410-947-4726 |
| Minnesota
Transportation Alliance |
transportationalliance.com |
| Missouri
Highway Corridor Council |
913-649-3305 |
| New
Hampshire Good Roads Association |
nhgoodroads.org |
| Ohio
Construction Information Association |
ocianews.com |
| Oklahoma
Good Roads & Transportation Association
|
ogrta.com |
| Pennsylvania
Highway Information Association |
paconstructors.org |
| Salt
Institute |
saltinstitute.org |
| South
Carolina Policy & Research Council |
sctransportation.com |
| Texas
Good Roads & Transportation Association |
tgrta.com |
| The
Road Information Program |
tripnet.org |
| Transportation
Development Assn. of Wisconsin |
tdawisconsin.org |
|
While airports receive most
of the federal attention and funding for security
and terrorism prevention, U.S. seaportswhich
support nearly five million jobs and annually
handle $2 trillion worth of cargo and more than
seven million cruise ship passengersremain
largely under-funded at the federal level. As
a result, they must often divert scarce state
and local funds to pay for enhanced security,
which puts growth and improvement plans on hold.
Were encouraged by the intent of the
Dec. 21, 2004, presidential directive on marine
security, which is to integrate and coordinate
maritime-related security efforts, such as the
Container Security Initiative and Operation Safe
Commerce, says Kurt Nagle, president and
CEO of the American Association of Port Authorities
(AAPA). Were also encouraged that
the budget proposed increases in funding for certain
federal programs to enhance maritime security,
such as U.S. Coast Guard programs, the Container
Security Initiative, radiological detectors and
the Customs Trade Partnership Against Terrorism
program. However, were disappointed that
neither the directive nor the proposed budget
addresses the need for adequate federal funding
assistance. More support is needed to enable state,
county and city-run public ports to implement
timely facility security enhancements without
having to delay or forego other important projects.
Funding is critically needed to handle ever-increasing
volumes of international commerce.

Photo courtesy of
© John Livzey for DMJM Harris. |
Nagle added that AAPA is
opposed to the Administrations FY06
budget recommendation to lump the Port Security
Grant program into the large and nebulous Targeted
Infrastructure Protection program, which would
further reduce the ability of seaports to compete
for limited security grant funding.
Chronic under-funding of
the Corps of Engineers Civil Works program
is also a concern. Insufficient funding for dredging
projects has impacted port programs and elicited
strong response from many sectors, including lawmakers.
Dave Hobson, chairman of the Energy and Water
Development Appropriations Subcommittee, spoke
out boldly during last years COE budget
debates. Over recent years, we have created
a huge backlog of work for the Corps, said
Hobson. We have put too many proj-ects in
the Corps shopping basket but havent
given them enough money to pay at checkout. The
consequence is that all of these existing projects
take longer to complete and cost more, both for
the federal taxpayer and the local sponsors.

Photo courtesy of
DMJM Harris. |
Roads
& Bridges
Public-private partnerships are leading the way
in solving grassroots transportation challenges
today. Its the most significant trend,
head and shoulders above anything else,
says Kern Jacobson, Earth Techs director
of transportation for North America. He cites
the monster Trans-Texas Corridor project (TTC-35),
a 50-year, 600-mile program to add private highway
capacity from Oklahoma to Mexico. On March 11,
2005, Texas DOT and Cintra-Zachry signed a 50-year
contract to plan, design, construct, maintain,
operate and collect tolls on TTC-35. Earth Tech
is the lead planner and engineer on the project.

Photo courtesy of
© John Livzey for DMJM Harris. |

Kern Jacobson
|
Opportunities arise
when private money comes to the table, says
Jacobson. We see it happening more and more.
Nothing else compares to whats happening
in public-private partnerships. In addition
to Texas, Jacobson cites projects and/or initiatives
currently under way in Virginia, California, North
Carolina, Georgia, Washington, Oregon and Florida.
Public-private partnerships offer sustained
programs that are immune to the ups and downs
of public funding, he adds.
| Subject |
2001
Grade |
2005
Grade |
Comments |
| Aviation |
D |
D+ |
Gridlock
on Americas runways eased from
crisis levels earlier in the decade
due to reduced demand and recent modest
funding increases. However, air travel
and traffic have reportedly surpassed
pre-Sept. 11 levels and are projected
to grow 4.3% annually through 2015.
Airports will face the challenge of
accommodating increasing numbers of
regional jets and new super-jumbo jets.
|
| Bridges |
C |
C |
Between
2000 and 2003, the percentage of the
nation's 590,750 bridges rated structurally
deficient or functionally obsolete decreased
slightly from 28.5% to 27.1%. However,
it will cost $9.4 billion a year for
20 years to eliminate all bridge deficiencies.
Long-term underinvestment is compounded
by the lack of a Federal transportation
program.
|
| Roads |
D+ |
D |
Poor
road conditions cost U.S. motorists
$54 billion a year in repairs and operating
costs$275 per motorist. Americans
spend 3.5 billion hours a year stuck
in traffic, at a cost of $63.2 billion
a year to the economy. Total spending
of $59.4 billion annually is well below
the $94 billion needed annually to improve
transportation infrastructure conditions
nationally. While long-term Federal
transportation programs remain unauthorized
since expiring on Sept. 30, 2003, the
nation continues to shortchange funding
for needed transportation improvements.
|
| Source:
ASCE Report Card for Americas
Infrastructure www.asce.org |
|
|
|
Ten to Watch |

Photo Courtesy
Orange County Transportation Authority
|
Garden Grove
Freeway (SR-22)
Orange County, CA
Under construction
Completion: December 2006
|
The $490-million
Garden Grove Freeway improvement project on
SR-22 is currently the largest highway construction
project in California. Undertaken by the Orange
County Transportation Authority (OCTA), it
is the first design-build project on an operating
freeway in the states history. By using
design-build, OCTA hopes to shave nearly three
years from the schedule. The project began
in September 2004 and is to be completed in
800 days. |
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Photo Courtesy
AGPS Architecture |
Portland
Aerial Tram
Portland, OR
Under construction
Completion: September 2006
|
The Portland
Aerial Tram will connect the Oregon Health
Sciences University Marquam Hill Campus with
a new campus and neighborhood under development
along the Willamette River in Portlands
central city. The $40-million project is the
centerpiece for redevelopment of the South
Waterfront. The Portland Office of Transportation
predicts about $2 billion in development will
be leveraged by the tram investment, resulting
in an estimated 10,000 jobs and 5,000 housing
units over the next 20 years. |
| |
|
|

Photo Courtesy
HDR |
Hoover
Dam Bypass
Nevada Arizona
Under construction
Completion: June 2008
|
The Hoover
Dam Bypass is a 3.5-mile corridor between
Clark County, NE, and Mohave County, AZ. It
will provide an alternate route to reduce
traffic problems where U.S. Highway 93 crosses
the Hoover Dam. A 2,000-ft-long bridge will
cross the Black Canyon and the Colorado River,
roughly 840 ft above the river and 260 ft
above the Hoover Dam crest. TEA-21 provided
$41 million for the $234 million project under
the High Priority Projects Program. |
| |
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|

Photo Courtesy
Lone Star Infrastructure |
State
Highway 130
Austin San Antonio, TX
Under construction
Completion: 2007
|
State
Highway 130, is a $1.5-billion tollway project
within the Austin-San Antonio corridor. The
first phase will complete 49 miles of the
90-mile roadway. It is the first Texas highway
developed under an exclusive development agreement
with a consortia that is responsible for designing,
constructing, maintaining and partially financing
the turnpike project. Ultimately, SH 130 will
be a six-lane roadway with a median capable
of accommodating rail. |
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|
|

Photo Courtesy
Transportation Corridor Agencies |
Orange
County Transportation Corridor
Southern California
Under construction
Completion: 2010
|
The $4-billion
Orange County Transportation Corridor is a
system of toll roads operated by the Transportation
Corridor Agencies, who plan, finance, construct,
and operate Orange Countys 67-mile toll
road system. Fifty-one miles of the system
are complete, including the San Joaquin Hills
(73) toll road from Newport Beach to San Juan
Capistrano and the Foothill/Eastern toll roads
(241, 261, 133) from the 91 Freeway to south
Orange County. |
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|
|

Photo Courtesy
Miami-Dade Aviation Department |
Miami International Airport
Miami, FL
Under construction
Completion: 2010
|
Miami
International Airport continues a massive
$4.8-billion capital improvement program.
It involves expansion of the terminals and
concourses to add approximately 2.7 million
sq ft. Improvements to airside facilities
involve runways, taxiways and taxi lanes to
optimize land utilization. To support cargo
traffic, new cargo buildings will add 3.3
million sq ft of capacity. Improvements to
ground transportation systems are also under
way. The CIP began in 1993. Substantial completion
is slated for 2010, with additional work through
2015. |
| |
|
|

Photo Courtesy
James Kinder, INDOT |
Ohio
River Bridges
Louisville, KY, and
Eastern Clark County, IN
In design
Completion: 2020
|
Kentucky
and Indiana are joining to fund a $2.46-billion
effort to rebuild a major portion of the Louisville/Southern
Indiana roadway system. The Ohio River Bridges
Project includes a new bridge connecting downtown
Louisville, KY, and Jeffersonville, IN, an
east end bridge completing the I-265 loop,
and the rebuilding of the Kennedy Interchange,
where I-64, I-65 and I-71 converge in downtown
Louisville. Construction is expected to begin
in 2007. |
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|
|

Photo Courtesy
Texas DOT - Dallas District |
Dallas
High Five Interchange
Dallas, TX
Under construction
Completion: December 2005
|
The Dallas
High Five is a $262-million, five-level interchange
that joins U.S. 75 and I-635 in North Dallas.
The project began in January 2002. Approximately
one-third of the construction has been at
night. Construction is 12 months ahead of
schedule or 85% complete after 65% of contract
time. This should bring the contractor an
early completion bonus of about $11 million. |
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|

Photo Courtesy
Metropolitan Washington Airports Authority
|
Washington
Dulles International Airport
Washington, D.C.
Under construction
Completion: 2009
|
The Metropolitan
Washington Airports Authority is undertaking
a $3.4-billion capital improvement program,
called d2, to expand, replace and upgrade
existing aircraft, passenger and support facilities
at Washington Dulles International Airport.
Improvements include the expansion of Concourse
B, a passenger train system (that will largely
replace the mobile lounge shuttles), associated
train stations and a new security mezzanine
in the terminal. Also under way is a new traffic
control tower and the first of two new runways. |
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Photo Courtesy
HDR |
OTIA
III State Bridge Delivery Program
State of Oregon
Under construction
Completion: 2011
|
The Oregon
Dept. of Transportations Oregon Transportation
Investment Act III (OTIA III) program includes
$1.3 billion for state bridges, $300 million
for city/county bridges, $361 million for
city/county pavement maintenance and preservation
and $500 million for projects adding transportation
capacity. Revenues from increased motor vehicle
and trucking fees, as well as federal monies,
will finance $2.46 billion in transportation
projects. Each year of the OTIA program, construction
projects will provide about 5,000 jobs. |
|
|
Dulles Adds New Runway |
|
 |
Washington Dulles International Airport is aggressively
building to accommodate the projected future increase
in aircraft traffic. The airport is in the midst
of a massive, $3.4-billion capital improvement
program, called d2, to improve many facets of
the airport infrastructure. One important component
in their growth plan is the addition of a fourth
runway and associated taxiways, planned for completion
in 2008. The $200-million project includes a new
9,400-ft concrete runway, 150-ft-wide with 35-ft-wide
asphalt paved shoulders. The project also includes
a parallel taxiway, connector taxiways, and cross-field
taxiways to tie the new runway to the airport
terminal area and the rest of the airfield.
The project design is 60% complete and moving
forward on schedule. One tricky component was
the re-distribution of all earth removed for construction.
Due to budget considerations, there was a strong
desire to balance earthwork so that it was not
necessary to bring in or remove materials from
the site. It was a challenge to make sure
grades were tied to other runways and to maintain
balanced earthwork, says Tony Collier, project
manager for Carter & Burgess.
The fourth runway project also includes support
facilities, such as a remote deicing pad with
nine positions, a deicing operation and control
facility, new access roads and biological treatment
units to capture and treat storm water. According
to Collier, these program elements will be completed
by 2009.
|
|
Company Profile:
Michael Baker Corp. |
 |
Transportation infrastructure is in continual
fluxthe demands constantly driving and overshadowing
both the supply and the ability to fully fund
projects that would propel aging roads, bridges,
and transit systems into long-term, effective
service.
The challenge, as transportation engineers, is
to prepare for change, while providing the highest
value to both customer and community. Over its
65-year history, Bakers approach to facing
challenge and change has evolved by focusing on
the complete project life cycle: planning, design,
construction services, operations, maintenance,
and finally, renewal of the asset.
The complexity of transportation infrastructure
projects requires us to consider all phases of
the project, program, or asset. says Bakers
John Kurgan, senior vice president and national
transportation practice director. The transition
between the life cycle phases is where many projects
meet the greatest challenges, and where Bakers
experience and talent provide the greatest value.
Deep understanding of critical issues, such as:
context-sensitive design for bridges; NEPA requirements
for long, complicated corridors and controversial
projects; technology-driven solutions for traffic
congestion; alternatives analysis for transit
projects; and overall program management of multi-million
dollar highway construction. These are but a part
of Bakers complete range of transportation
engineering skills.
Weve learned, through our design traditions
and our corporate culture, to view these challenges
as invitations to innovate, and thats exactly
what we do, adds Kurgan. The selection
of Baker to provide project management, bridge
type selection, public involvement services, and
final engineering design services for a new bridge
over the Ohio River connecting downtown Louisville,
KY, and Jeffersonville, IN, is evidence of our
willingness and ability to meet the dynamic challenges
of transportation infrastructure in this country.
|
|
Toll Road to Ease
Congestion in South Texas |

Photo courtesy of
© John Livzey for DMJM Harris. |
The ambitious Texas State
Highway 130 (SH 130) toll road will serve as an
eastern bypass for the Austin metropolitan area
and link the cities of Austin and San Antonio.
Traversing urban and rural areas, the northernmost
49 miles, which are currently under construction,
will feature 124 bridges and two major water crossings.
The toll road will tie in to I-35 at the northernmost
point of the alignment and to U.S.183 near Mustang
Ridge in the southern portion. Major elements
of the facility are its five system interchanges,
approximately 30 ramp toll plazas, and four mainline
toll plazas. Approximately 36.5 million yards
of material will be moved over the length of the
project. To best integrate right-of-way
acquisition and utilities relocation with design
and construction, the project has been divided
into 15 sections, states Michael Shapiro,
P.E., project manager for DMJM Harris, a New York-based
AECOM company. DMJM Harris is serving as the projects
lead design firm.
In addition to the complex construction logistics,
soil conditions are a key issue. Because of the
presence of expansive clays, some sections will
require soil undercutting and reconditioning.
The average soil reconditioning will be to a depth
of 36 in., but some sections may require as much
as 72 in. of conditioning.
Another element of the project is the development
of aesthetic and landscape treatment guidelines
for the entire corridor. The report, Final Aesthetics
Design Guidelines, will address the treatment
of bridges and walls, landscaping, hike and bike
trails and mitigation of the highways impact
on adjacent historic properties.
The project schedule calls for a 4-1/2-year construction
period. SH 130 is expected to open to traffic
by December 2007.
|
|
Concerns for Port
Security Looming |
Within the next 15 years, port industry analysts
predict a doubling of the approximately two billion
tons of cargo that U.S. ports and waterways now
handle each year, combined with continued increases
in cruise and ferry passenger traffic. In response,
seaports across the country are expanding to meet
the expected need, which means huge investments
in infrastructure, equipment and personnel.
On top of already high costs of meeting Americas
trade volume demands, ports are spending millions
more to harden security in and around their facilities
to protect against acts of terrorism. That is
why the nations ports are concerned about
the Bush administrations recommendation
to eliminate the Dept. of Homeland Securitys
Port Security Grant Program and lump it into a
sweeping new program that combines the security
infrastructure needs of seaports with those of
trains, trucks, buses and other public transit.

Photo courtesy of
American Association of Port Authorities. |
While it appears Congress will likely reject
the administrations proposal, the American
Association of Port Authorities (AAPA) and its
member ports argue there is still a need for significantly
increased federal funds to pay for port security.
Historically, the Bush administrations proposed
annual budget has only once included the specific
security needs of seaports, and that proposal
(in FY 05) was for only $46 million. This
compares to $400 million recommended by AAPA,
which reflects estimates that the U.S. Coast Guard
made in 2003, showing that Americas ports
would need to spend $5.4 billion to protect their
facilities over the next decade.
What the administrations recommendation
would do is to take a grant program that helps
fund projects that defend our borders and has
clearly-defined costs, and roll it into a nebulous
new program that pits border security needs against
domestic security programs, says Kurt Nagle,
AAPAs president and CEO. Nagle added that
our economy, our safety and even our national
defense depends largely on how well we can protect
our seaports and ensure deep-draft shipping access
to them.
|
|
Viewpoint |
|
 |
Safer Roads Save Lives
By Roger Wentz,
Executive Director, American Traffic Safety Services
Association (ATSSA)
The 1,800 members of ATSSA are advocating for
a number of important congressional issues that
are currently under consideration. For example,
ATSSA strongly supports efforts to better coordinate
roadway safety activities through the creation
of a core federal highway safety improvement program.
Research obtained by ATSSA indicates that low-cost
safety improvementssuch as guardrails, crash
cushions, pavement markings and improved signagecould
have a cost-benefit return as high as $23 for
every dollar invested.
ATSSA also supports separate bid activities that
would encourage the use of traffic control devices
in roadway work zones. Currently, many states
lump temporary traffic control components into
a single bid package. Logically, contractors then
limit the number of devices to reduce costs and
increase profits. Separate pay pricing would establish
a set price for each device or activity, allowing
greater flexibility to ensure a robust safety
environment in work zones.
 |
Transit Trends
By Frank T. Martin,
Vice President, PBS&J.
With last Novembers many transportation-transit
initiative victories, projects involving rail
and BRT systems, bus service and roadway improvements
are all in the spotlight. But, accompanying the
boom in voter-approved funding comes the continued
pressure of sales tax revenues that support transit
operations nationwide. Transit agencies, compelled
to streamline operations, will pass that expectation
along to engineering firms tackling new transit
projects.
Efficient, effective solutions that stretch capital
dollars and maximize programs for local areas
are needed. Value engineering will be a critical
service. More accurate cost estimating also will
be required to close the gap between estimated
and actual costs, so elected officials do not
have to address cost overruns as frequently.
 |
Labor Poor Indicator
of Transportation Project Costs
By Ray Poupore,
Executive Director,
National Heavy and Highway Alliance
Over the years there have been various pronouncements
of the cost savings that would be realized if
the Davis-Bacon Act was repealed. These assertions
remain unsubstantiated and there is no documentation
to support this position.
Little existed to substantiate the proposition
that wage rates and construction costs for highways
have no direct correlation until the National
Heavy and Highway Alliance commissioned an analysis
of the costs to build a mile of highway in 1995.
Data from the Federal Highway Administration (FHWA)
was used to examine the relationship between wages,
labor hours and highway construction costs. The
conclusion was that hourly wage rates are a poor
indicator of cost per mile to build highways.
Lower wage states can have high total costs per
mile and higher wage states can have lower total
costs per mile.
To assure that the conclusions reached in 1995
remain valid, the National Heavy and Highway Alliance
contracted with the Construction Labor Research
Council to update the earlier study. This study
re-confirmed the original findings. When workers
skills and productivity justify higher wage rates,
highways can be built at the same, or even lower
cost per mile than when lower wage, lower skilled
workers are employed.
While the hourly wage rate for the high wage states
was 73% more than the low wage, labor hours were
35% less and total cost per mile was 4% less.
Again, not only was hourly wage rate a poor predictor
of total highway cost per mile, but there were
cost per mile savings associated with construction
in the average high wage state.
Higher wage workers can build highways with no
impact upon total cost because of their superior
skills. This is evidenced by their need to utilize
one-third fewer labor hours. Workers benefit from
a higher standard of living at no cost to taxpayers.
Another observation from reviewing the data is
the small portion of highway cost which is attributable
to labor. Only 20% of the total expenditures recorded
by the FHWA are labor costs. Efforts to reduce
federal highway expenditures are, therefore, likely
to be better directed toward other cost categories
which account for 80% of highway costs.
The conclusion of the 1995 study remains valid.
As the original report stated, Simplistic
views and pronouncements that proclaim lowering
the hourly wage rates of construction workers
will reduce construction costs and expenditures
show a basic misunderstanding of the construction
industry. As we have shown in this report, wage
rates have a strong correlation with man hours
which should prove to anyones satisfaction
that productivity is the key to calculating labor
costs.
 |
Design-Build Can Be
Win-Win
By Frank A. McDonough,
P.E., Chairman
of the Board, McDonough Bolyard Peck
Many owners and contractors have experienced the
worst of relationships when their construction
projects ran into trouble. Cost overruns, schedule
delays and unfulfilled quality expectations can
lead to disputes that are tough to resolve. It
is not surprising that innovative concepts have
emerged which can dramatically benefit both parties.
Design-build is one such innovation which, when
applied in the right conditions, provides benefits
in risk management and time savings to an owner
and more control to the contractor. While many
types and sizes of projects are feasible with
D-B, there are important factors necessary for
its success. Sometimes, especially with large
agencies, it is not possible to expedite decisions.
In that case, traditional construction processes
may be more effective. The same is true with projects
where the final design is already determined.
Design-build needs flexibility so the contractor
can innovate and bring added value to the project.
Design-build is indeed an excellent construction
management tool, when wisely used; but the pros
and cons should be carefully weighed.
 |
Better-than-Ever Concrete
By Roy H. Reiterman,
P.E., Technical
Consultant, Wire Reinforcement Institute
We have better reinforced concrete today than
ever before. Why? Because we specify and check
the mix design more readily, we have a vast list
of admixtures for more enhanced mixes and improved
batching facilities and operations. On top of
that, we have better placing methods and equipment
and improved curing methods. More high-strength
concrete is being specified today than ever before.
In our welded wire reinforcement (WWR) business,
we encourage the use of more high-strength reinforcement
(a minimum yield strength of 80 ksi) and more
sheet product, especially for flatwork. More WWR
is being designed with larger spacings (12 in.
or more). Larger spaces require larger wire areas,
thus increasing the rigidity which helps to keep
the WWR where it will do the most good in slabs
and paving. Engineers are now designing and specifying
areas or ratios of steel that will refine the
design and help keep intermediate cracking tight
and level.
 |
Asphalt is a Sustainable
Material
By Mike Acott,
President,
National Asphalt Pavement Association
Asphalt pavement is the number one recycled material
in America, and asphalt pavements are 100% recyclable.
This means we recapture, rejuvenate, and reuse
the liquid asphalt cementthe most expensive
component of the mix. This is particularly cost-effective
as the cost of virgin materials increases. In
fact, paving with asphalt is like putting money
in the bankit may be worth more when its
time to recycle than when it was originally laid
down.
Some types of asphalt pavement reduce noise pollution
and other environmental concerns. On the operations
side, the U.S. Environmental Protection Agency
has declared that HMA production facilities do
not have the potential to be major sources of
hazardous air pollutants.
Emissions from HMA plants are very low and well-controlled.
Over the past 40 years, while annual production
of HMA paving material has increased 250%, total
emissions from HMA plants have dropped 97%.
The National Asphalt Pavement Association and
the Hot Mix Asphalt industry have an impressive
track record on environmental stewardship. Our
everyday efforts conserve precious natural resources,
minimize the impact of our operations on the environment,
and reduce reliance on landfills. Truly, asphalt
is a sustainable material.
|
|
Paving and Compaction
for Todays Super Roads |
|
Hot mix asphalt (HMA) covers more than 90% of
Americas paved roads. That statistic alone
served as one impetus for the Strategic Highway
Research Program (SHRP) to develop Superpave (SUperior
PERforming Asphalt PAVEments). Superpave, first
initiated by SHRP in the late 1980s, is a system
of performance-related HMA design specifications
comprising three elements:
- An asphalt binder specification
geared to pavement loading and local climates;
- A volumetric mix design
and analysis system, incorporating volumetric
properties such as the percentage of air voids,
voids in the mineral aggregate (VMA) and voids
filled with asphalt (VFA); and
- Soon-to-be-developed
mix analysis tests and a performance prediction
system that includes computer software, weather
database, and environmental and performance
models.
Once implemented in California next January, the
Superpave specifications will have been adopted
by every U.S. state.
Reducing Stress
Todays standard
truck weights increase the wear and tear on asphalt
pavement. This, combined with the dramatic
increase in the number of trucks traveling on
the highway system, subjects asphalt pavements
to stresses that can lead to rutting and premature
failure, says Ron Corun, technical support
manager for Citgo Asphalt. CITGO Asphalt uses
a technology developed by the Dutch company, Ooms
Avenhorn, to produce polymer-modified asphalt
(known as CITGOFLEX SP) to meet Superpave binder
specifications.
Dave Jones, Ph.D., paving technical manager for
Trumbull Asphalt, a division of Owens Corning,
agrees. Interstate highways comprise just
2% of the U.S. lane miles but they carry 75% of
Americas truck traffic. Its not surprising
that they get beaten to death.
Jones says that numbers vary in different studies,
but that they show that one truck pass is equal
to around 4,000 passes by a car in terms of roadway
wear and tear.

Photo courtesy of
National Asphalt Pavement Assn. |
Binding Solutions
Of particular significance is the SHRP research
on asphalt binders. The Performance Grade (PG)
rating system clarifies the asphalt binder specification
system and helps tie specifications to performance.
While asphalt serves as the glue that holds the
roadway together, polymers and other additives
reinforce the system to better support high traffic
volume, heavy loading and climate conditions.
There is nothing magical about PG graded
asphalt binders, says Corun. They
simply represent the better quality asphalts we
have used in the past, but specified in a new
way, and there are new grades available to handle
higher temperatures and heavier traffic. PG asphalts
give us a new tool to insure our asphalt pavements
last longer and perform better.
The specifications are more restrictive, which
has impacted the industry. Many asphalts
that were historically used had to be changed
or are no longer around, says Jones. They
couldnt accomplish the high and low temperature
levels that Superpave requires. This has
impacted production and been an influence on the
industry adjustments that have reduced the number
of U.S. refineries that make asphalt. There were
some 300 refineries 20 years ago, but that number
has now dropped below 60.
Making a Difference
Has the research and money poured into the SHRP
Superpave program really paid off? Absolutely,
says Jones. It has made a difference in
the quality of our highways, improved their life,
and given the civil engineering community new
tools that allow them to design and build better
highways. The fact that 49 of 50 states have adopted
Superpave is a testament to its value. It has
made a significant contribution to the quality
of our highways.
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Drum
Roll for New Application Option
Inventive machinery
is helping to improve the density and compaction
when laying roadways. For example, BOMAG
recently introduced a re-designed BW 190
AD-4 HF tandem vibratory roller. This new
design makes all drum surfaces and sprinkler
nozzles visible across the entire 79-in.
rolling width, enabling operators to spot
potential asphalt pick-up. An optional asphalt
manager system automatically measures and
controls the compaction performance of the
roller, to continuously optimize compaction.
Vital information, including the current
effective amplitude, asphalt surface temperature
and vibration values for compaction increases,
is available to the operator at all times.
This technology allows the operator to determine
the exact number of passes needed to meet
density and quality requirements.
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Post-Tensioned Concrete
Bridge Relieves Tension for Des Moines Drivers |
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In June, the City of Des Moines, IA, celebrated
the formal opening of an innovative post-tensioned
concrete arch bridge that will relieve congestion
in the heart of the citys central business
district.
Unlike traditional arch bridges, which use steel
tie girders, the Martin Luther King Jr. Parkway
Bridge relies on post-tensioned concrete to resist
the thrust of the 85-meter, five-lane bridge.
The concrete tie girders allowed bridge designers
from the Des Moines and Chicago offices of Long
Beach, CA-based Earth Tech Inc., to use multiple,
independent, steel post-tensioning strands. These
strengthened the structure more effectively than
would have been possible using steel ties. The
Earth Tech engineers also added another unique
element to the bridgetwin steel arch ribs
that use tension in the hangers to create a stabilization
effect, eliminating the need for lateral bracing.
The bridge, which crosses the Raccoon River, is
part of a $130-million capital improvement project
to alleviate traffic congestion on Interstate
235 and to provide better access to the airport,
the central business district, and the state capitol
complex.
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Working Out On The
North Forty |
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In farming lingo, the north forty is a landowners
upper 40 acres on a farm. Denvers North
Forty project involves a variety of activities
for 40 miles of Interstate 25, north of Denver.
Fourteen miles of the interstate roadway will
be rebuilt and widened from four to six lanes.
The project area stretches from Broomfield to
Fort Collins.
Lawson Construction Co., of Longmont, CO, is currently
at work rebuilding 7.5 miles of the highway. They
are responsible for final trimming of the grade
and all of the concrete pavingfrom ramps
to shoulders to interstate paving.
To accomplish this huge task, they are using an
array of GOMACO equipment: a 9500 trimmer, a GT-6300
for shoulder work, an RTP-500 placer, a GP-2500
for ramp work, a GP-3500, two T/C-600 texture/cure
machines, and a GP-4000 paver with an In-The-Pan
Dowel Bar Inserter (IDBI) for interstate paving.
Lawsons GP-4000 paves an area that is 40.5-ft
wide, while the IDBI inserts 36 bars, 1.5-in.
diameter into the 13-in.-thick slab.
We love to slipform pavement as wide and
as long as we can go, says Ken Lawson, president
of Lawson Construction. We poured 3,140
cu yd in eight hours on our last pour and we couldnt
keep enough concrete in front of the paver.
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Rustic Pavement Adds
to White House Aesthetics |
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When the U.S. Federal Highway Administration
wanted to pave the roadway in front of the most
prestigious address in Americausing a unique
hot mix productAggregate Industries
Mid Atlantic Region proved they were up to the
challenge.
The $18-million reconstruction project, in front
of the White House, was awarded to Lane Construction
and called for the roadway surface to have a unique
rustic look. The mix design was originally conceived
to resemble a dirt road and consisted of a polymer
binder produced by Neville Chemical and brought
in from Pittsburgh, PA. This special material
was used in lieu of a traditional liquid asphalt
binder. The course aggregate used for the mix
was brought in from Maine and the pink quartzite
sand from South Dakota.
The $1,000,000 paving contract consisted of 2,200
tons of Superpave intermediate course and 1,000
tons of specialty rustic pavement
surface course. The rustic pavement
was produced at Aggregate Industries Waldorf,
MD, plant. Plant manager David Jones and his design,
production and quality control team produced the
unique product. According to Herb Haller, operations
manager for Aggregate Industries, the pavement
installation utilized two paving crews working
simultaneously. They used an Ingersoll Rand 4410
Blaw-Knox paver and an Ingersoll Rand DD-110 compactor.
The project was coordinated by estimating manager
Bob Petty who said, This is the first high-profile
proj-ect using this special mix, and it will hopefully
pave the way for similar proj-ects in and around
the Washington, D.C., area in the future.
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New Infrastructure
Estimating Software |
BID2WIN Software Inc. provides Windows®-based
cost estimating and bidding solutions for the
construction industry. We help construction
firms win more profitable bids through standardized
estimating, increased accuracy and efficiency,
and historical bidding analysis, says BID2WIN
President, Paul J. McKeon, Jr.
In June, BID2WIN introduced a browser-based Management
Reporting Module for its flagship product, BID2WIN
2005. This optional, add-on module allows users
to access and analyze historical bid data from
within the office or anywhere Internet access
is available. Owners, managers, or estimators
can instantly run queries of past bids by date
range, estimator, customer, bid status, etc. Then,
within these parameters, they can generate reports
on equipment usage, material quantities, win/loss
ratios, and more. Users can also create subscriptions
to have reports automatically e-mailed to them
at a specified day and time.
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New Bridge Rising
in Modesto |
Reconstruction is under way on the 9th Street
Bridge over the Tuolumne River in Modesto, CA.
Harris & Associates of Concord, CA is providing
construction management and resident engineering
services. The project required demolition of the
existing bridge and construction of a 2,000-ft
replacement structure. The new bridge will be
a three-frame, cast-in-place, concrete box girder,
post-tensioned bridge. It will include parabolic
soffits and belvederes. Major project challenges
include a tight schedule, environmental concerns,
cofferdams, dewatering and placement of underwater
concrete. This $22-million project is scheduled
to be complete later this summer.
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New Spring-Assist
Hatches |
East Jordan Iron Works has long been known for
the design and manufacture of construction castings.
These include manhole frames and covers, catch
basins, drainage inlets and trench grates. The
firm recently introduced new spring-assist hatches
designed for heavy-duty airport applications.
Clear openings range from 24 to 36 in. and the
hatches may incorporate security bolting, including
pentagon or tamper-proof bolts.
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Innovation Block
Offers Quick Construction Solution |
The Stone Strong® precast retaining wall
system uses a series of 5,800-lb blocks, each
with a 24-sq-ft face. Three-ft tall and 8-ft wide,
the innovative hollow design offers a variety
of advantages. First, the hollow cavity means
less weight per square foot. That translates
into a much faster, easier, and less costly installation
process, says John Gran, vice president
of Stone Strong Systems of Lincoln, NE.
In addition, the design provides a built-in drainage
system that alleviates the potential for water
damage or drainage system failure. This
innovative block design is the worlds first
big block to be fully engineered both structurally
and geotechnically, says Gran. The block
does not require tiebacks or additional mechanics
and can withstand up to 12 ft of dirt, depending
on site and soil conditions. With engineering,
a Stone Strong wall can go as high as 40 ft.
The blocks tapered sides accommodate both
straight and winding designsincluding convex,
concave, and circular options. The Stone Strong
system accommodates a variety of transportation
applications by offering three sizes of blocks,
custom patterns and the ability to match any color.
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White Concrete
Brightens Bridges |
The Pennsylvania Turnpike Commission is currently
constructing 100 miles of roadway along the western
side of the state. The $3-billion, multi-year
expansion includes specification of white concrete,
produced with Lehigh white Portland cement, for
all mainline bridge parapets.
The advantage of using white concrete is that
white reflects more light than traditional gray
concrete. This increases visibility at night and
in stormy weather. Another advantage is its aesthetic
appeal. The white concrete generally provides
a contrast to its environment, accentuating the
visual aspects of the design.
White concrete is popular for bridge and
highway projects in many states, comments
Larry Rowland, manager of marketing and technical
services at Lehigh Cement Co. of Allentown, PA.
The New Jersey Dept. of Transportation has
specified white concrete barriers since the early
1960s. Other state DOTs specifying white
concrete include Texas, Pennsylvania, New York
and Illinois.
White concrete requires no painting, so there
are fewer maintenance requirements. This
alone is a huge asset, says Rowland. White
concrete keeps traffic flowing and saves lives
by being more visible and reducing maintenance
crew exposure in high traffic areas.
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Up to the Challenge |
Paving contractor Holmes & Murphy Inc. (H&M)
of Orchard Park, NY, recently completed a $12-million
runway-taxiway upgrade project at the Buffalo
Niagara International Airport (BNI). The mix of
choice was not concrete. It was nearly 100,000
tons of asphaltFederal Aviation Administration
(FAA), P-401 mix designused to upgrade and
lengthen the crosswinds runway.
This is one of the toughest specs to adhere
to, says Curt Resetarits, account representative
for Buffalo Crushed Stone Inc., supplier of the
asphalt for the project. First, the performance-based
spec required minimum densities of 96% across
the mat and 92% at the joints. Second, the large,
two-inch-minus coarse aggregate used in the base
gives the asphalt mix its strength, but has the
potential to segregate.
However, the contractors unique Terex |
Cedarapids Remix paver took care of that. This
paver uses two sets of twin counter-rotating augers
in the hopper to uniformly pull material from
all areas of the hopper to combat material segregation.
Equally as important, the reblending also reduced
thermal segregation. At BNI, there was a 40-degree
window for each roller to compact the mat to optimum
densities. If non-uniform mat temperatures existed,
it would have been difficult to achieve spec densities.
Throughout the entire project, H&M outperformed
the tough compaction standards of the spec. The
contractor attributes much of this success to
using the Remix paver.
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