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The Top 500 Design Firms

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For ENR, it was a watershed year. We recognized individual contributions to the industry by citing people who "Made Their Marks" in 1965. In addition, fresh off the first ENR Top 400 Contractors list in 1964, ENR published its first-ever Top 500 Design Firms list.

The table below shows only rankings and firm name. For complete data from the Top 500 Design Firms list see the following links.

The Top 500 Design Firms
RANK FIRM FIRM TYPE
2015 2014
101
104
Hammel Green and Abrahamson Inc. (HGA), Minneapolis, Minn.
AE
102
107
KPFF Consulting Engineers, Seattle, Wash.
E
103
121
Ambitech Engineering Corp., Downers Grove, Ill.
EC
104
102
Kadrmas Lee & Jackson Inc. (KLJ), Bismarck, N.D.
E
105
108
Populous, Kansas City, Mo.†
A
106
128
Page, Washington, D.C.
AE
107
122
GEI Consultants Inc., Woburn, Mass.†
E
108
105
David Evans and Associates Inc., Portland, Ore.
EA
109
126
Haley & Aldrich Inc., Burlington, Mass.†
E
110
117
GAI Consultants Inc., Homestead, Pa.
E
111
136
Braun Intertec Corp., Minneapolis, Minn.
GE
112
114
Wiss, Janney, Elstner Associates Inc., Northbrook, Ill.
EA
113
145
EN Engineering LLC, Warrenville, Ill.
E
114
118
Whitman, Requardt & Associates LLP, Baltimore, Md.
EA
115
139
Olsson Associates, Lincoln, Neb.
E
116
133
Apex Cos. LLC, Rockville, Md.†
ENV
117
119
Civil & Environmental Consultants Inc., Pittsburgh, PA. †
E
118
**
NORR, Chicago, Ill.†
AE
119
89
TransCore, Nashville, Tenn.
EC
120
132
Corgan, Dallas, Texas
A
121
124
Simpson Gumpertz & Heger Inc., Waltham, Mass.
E
122
141
Vanderweil Engineers, Boston, Mass.
E
123
131
CRB, St. Louis, Mo.
EA
124
231
NV5 Holdings Inc., Hollywood, Fla.†
E
125
78
M+W U.S. Inc., Watervliet, N.Y.
EC
126
116
GZA GeoEnvironmental Inc., Norwood, Mass.†
EC
127
130
Alfred Benesch & Co., Chicago, Ill.
E
128
120
DLZ, Columbus, Ohio†
EA
129
125
Middough Inc., Cleveland, Ohio
EA
130
123
Affiliated Engineers Inc., Madison, Wis.†
E
131
143
Short Elliott Hendrickson Inc. (SEH), St. Paul, Minn.†
EA
132
135
HAKS, New York, N.Y.
EA
133
134
Syska Hennessy Group, New York, N.Y.†
E
134
142
RCM Technologies Inc., Pennsauken, N.J.†
EA
135
112
Woolpert Inc., Dayton, Ohio†
AEP
136
140
H.W. Lochner Inc., Chicago, Ill.
E
137
137
EA Engineering Science and Tech. Inc., PBC, Hunt Valley, Md.
ENV
138
113
Merrick & Co., Greenwood Village, Colo.
EA
139
129
Freese and Nichols Inc., Fort Worth, Texas
EA
140
175
Psomas, Los Angeles, Calif.
E
141
149
Huitt-Zollars Inc., Dallas, Texas
EA
142
158
GPD Group, Akron, Ohio
EA
143
**
IBI Group Inc., Westerville, Ohio†
AE
144
164
Anvil Corp., Bellingham, Wash.†
E
145
187
LJA Engineering Inc., Houston, Texas†
E
146
253
IPS - Integrated Project Services Inc., Blue Bell, Pa.†
EA
147
148
Mead & Hunt Inc., Middleton, Wis.†
EA
148
144
Clark Nexsen, Virginia Beach, Va.
AE
149
166
Halff Associates Inc., Richardson, Texas†
EA
150
146
C&S Companies, Syracuse, N.Y.
EA
151
138
Day & Zimmermann, Philadelphia, Pa.†
EC
152
151
McCormick Taylor Inc., Philadelphia, Pa.
E
153
342
Adrian Smith + Gordon Gill Architecture, Chicago, Ill.
A
154
161
Brown & Gay Engineers Inc., Houston, Texas
E
155
160
SWCA Environmental Consultants, Phoenix, Ariz.
ENV
156
147
Bowman Consulting, Chantilly, Va.
E
157
155
Kennedy/Jenks Consultants, San Francisco, Calif.
EA
158
174
Henderson Engineers Inc., Lenexa, Kan.†
E
159
157
Burgess & Niple Inc., Columbus, Ohio
EA
160
183
Pape-Dawson Engineers Inc., San Antonio, Texas
E
161
193
Maser Consulting PA, Red Bank, N.J
E
162
156
Tectonic Engineering & Surveying Consultants, Mountainville, N.Y.†
E
163
150
Flad Architects, Madison, Wis.†
AE
164
153
Greeley and Hansen LLC, Chicago, Ill.†
E
165
188
Walter P Moore, Houston, Texas
E
166
213
Farnsworth Group Inc., Peoria, Ill.
EA
167
172
Waldemar S. Nelson and Co. Inc., New Orleans, La.
EA
168
248
Atwell, Southfield, Mich.†
EC
169
176
Bartlett & West Inc., Topeka, Kan.
E
170
201
VOA Associates Inc., Chicago, Ill.†
A
171
191
The Burke Group, Rosemont, Ill.†
E
172
169
WATG | Wimberly Interiors, Honolulu, Hawaii†
A
173
**
Burrow Global LLC, HOUSTON, Texas†
EA
174
127
Ausenco, Concord, Calif.
E
175
184
American Structurepoint Inc., Indianapolis, Ind.
EA
176
185
Mesa Associates Inc., Knoxville, Tenn.
EA
177
163
Hanson Professional Services Inc., Springfield, Ill.†
EA
178
198
Weston & Sampson, Peabody, Mass.†
E
179
170
Smith Seckman Reid Inc., Nashville, Tenn.
E
180
179
Wilson & Co. Inc., Engineers & Architects, Albuquerque, N.M.
EA
181
173
AKF Group LLC, New York, N.Y.†
E
182
273
Nelson Worldwide Inc., Philadelphia, Pa.†
AE
183
171
Barge Waggoner Sumner & Cannon Inc., Nashville, Tenn.†
EA
184
180
Strand Associates Inc., Madison, Wis.
E
185
182
DOWL, Anchorage, Alaska
E
186
83
ENGlobal U.S. Inc., Houston, Texas
EC
187
199
Neel-Schaffer Inc., Jackson, Miss.†
E
188
221
Jones and Carter Inc., Houston, Texas
E
189
217
A. Morton Thomas and Associates Inc., Rockville, Md.
E
190
190
Robert A.M. Stern Architects LLP (RAMSA), New York, N.Y.†
A
191
162
HMC Architects, Los Angeles, Calif.
A
192
181
Garver, North Little Rock, Ark.
E
193
195
Shannon & Wilson Inc., Seattle, Wash.
GE
194
203
Parkhill, Smith & Cooper Inc., Lubbock, Texas†
EA
195
197
GeoEngineers Inc., Seattle, Wash.
GE/E
196
**
KTGY Group Inc., Irvine, Calif.†
A
197
209
T&M Associates, Middletown, N.J.†
E
198
205
EMH&T, Columbus, Ohio
E
199
196
Bergmann Associates Inc., Rochester, N.Y.
AEP
200
224
Wade Trim, Detroit, Mich.†
E
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