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The Top 500 Design Firms

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The industry is still working through odd patches between the recession and what appears to be the early stages of recovery. As many firms search for clarity about markets and trends, ENR has re-engineered a new approach to the findings of the ENR Top 500 Design Firms survey. Look for new infographics with data and viewpoints from the nation’s largest design firms, presented in easy-to-read formats created to provide readers with fresh insights.

The Top 500 Design Firms list, published annually in April, ranks the 500 largest U.S.-based designs firms, both publicly and privately held, based on design-specific revenue.

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

The Top 500 Design Firms
RANK FIRM NAME & LOCATION INT
2011 2010
101 161 Day & Zimmermann, Philadelphia, Pa.† EC
102 143 H.W. Lochner Inc., Chicago, Ill.† AE
103 112 Willbros Group Inc., Houston, Texas† EC
104 89 RBF Consulting, Irvine, Calif.† EPL
105 ** Morrison Hershfield, Atlanta, Ga. E
106 118 Gulf Interstate Engineering Co., Houston, Texas† EA
107 86 Populous, Kansas City, Mo.† A
108 113 Woodard & Curran, Portland, Maine E
109 116 ECS, Chantilly, Va.† E
110 122 O’Brien & Gere, Syracuse, N.Y.† E
111 105 KlingStubbins, Philadelphia, Pa. AEP
112 101 Halcrow Inc., New York, N.Y. E
113 94 KPFF Consulting Engineers, Seattle, Wash.† E
114 117 Langan Eng’g and Environmental Services Inc., Elmwood Park, N.J. E
115 111 Syska Hennessy Group, New York, N.Y.† E
116 136 Volkert Inc., Mobile, Ala. E
117 108 Thornton Tomasetti Inc., New York, N.Y. EA
118 114 DLZ Corp., Columbus, Ohio† EA
119 125 GZA GeoEnvironmental Inc., Norwood, Mass.† EC
120 90 Callison, Seattle, Wash. A
121 121 Kennedy/Jenks Consultants, San Francisco, Calif.† EA
122 120 Wiss, Janney, Elstner Associates Inc., Northbrook, Ill. EA
123 131 Affiliated Engineers Inc., Madison, Wis. E
124 ** Versar Inc., Springfield, Va.† E
125 133 HMC Architects, Ontario, Calif. A
126 144 Ghafari Associates LLC, Dearborn, Mich.† EA
127 91 Gresham, Smith and Partners, Nashville, Tenn. AE
128 127 Whitman, Requardt & Associates LLP, Baltimore, Md. EA
129 145 Ambitech Engineering Corp., Downers Grove, Ill. E
130 134 Simpson Gumpertz & Heger Inc., Waltham, Mass. E
131 124 Short Elliott Hendrickson Inc., Minneapolis, Minn. EA
132 ** Ingenium International Inc., Detroit, Mich.† AE
133 123 PageSoutherlandPage, Houston, Texas AE
134 103 Foth Cos., Green Bay, Wis.† EC
135 167 GAI Consultants Inc., Homestead, Pa. E
136 104 Burgess & Niple Inc., Columbus, Ohio EA
137 148 C&S Cos., Syracuse, N.Y. EA
138 132 Corgan Associates Inc., Dallas, Texas A
139 139 Freese and Nichols Inc., Fort Worth, Texas EA
140 150 Greeley and Hansen LLC, Chicago, Ill.† E
141 160 EA Engineering Science and Tech. Inc., Hunt Valley, Md.† ENV
142 128 Psomas, Los Angeles, Calif.† E
143 129 Parametrix, Auburn, Wash. E
144 156 GEI Consultants Inc., Woburn, Mass. E
145 126 Greenhorne & O’Mara, Laurel, Md. E
146 153 Smith Seckman Reid Inc., Nashville, Tenn.† E
147 142 Huitt-Zollars Inc., Dallas, Texas EA
148 141 Haley & Aldrich Inc., Burlington, Mass.† E
149 177 Willdan, Anaheim, Calif.† E
150 135 R.W. Armstrong & Associates Inc., Indianapolis, Ind. EA
151 140 TransCore, Hummelstown, Pa. EC
152 100 Fentress Architects, Denver, Colo. A
153 152 Halff Associates Inc., Richardson, Texas EA
154 165 CRB, Kansas City, Mo.† EA
155 154 Olsson Associates, Lincoln, Neb. E
156 166 EYP Architecture & Engineering, Albany, N.Y.† AE
157 147 Clark-Nexsen PC, Norfolk, Va. AE
158 ** Nolte Vertical 5 (NV5), Hollywood, Fla.† E
159 172 Weidlinger Associates Inc., New York, N.Y.† E
160 224 Alfred Benesch & Co., Chicago, Ill. E
161 158 EwingCole, Philadelphia, Pa. AE
162 192 Weston & Sampson Inc., Peabody, Mass.† E
163 162 WHPacific Inc., Anchorage, Alaska† EA
164 164 McCormick Taylor Inc., Philadelphia, Pa. E
165 191 SWCA Environmental Consultants, Phoenix, Ariz. ENV
166 181 TMAD TAYLOR & GAINES, Pasadena, Calif.† E
167 159 Wilson & Co. Inc., Engineers & Architects, Albuquerque, N.M. EA
168 190 Birdsall Services Group, Sea Girt, N.J.† E
169 174 Hanson Professional Services Inc., Springfield, Ill.† AE
170 176 Waldemar S. Nelson And Co. Inc., New Orleans, La. EA
171 182 AKF Group LLC, New York, N.Y.† E
172 ** Apex Cos. LLC, Rockville, Md. ENV
173 163 Flad Architects, Madison, Wis.† AE
174 171 Mead & Hunt Inc., Madison, Wis. EA
175 205 HR Green Inc., Cedar Rapids, Iowa EA
176 232 Belt Collins, Honolulu, Hawaii L
177 186 Shannon & Wilson Inc., Seattle, Wash. E
178 185 Henderson Engineers Inc., Lenexa, Kan.† E
179 168 SHW Group, Plano, Texas AE
180 200 American Structurepoint Inc., Indianapolis, Ind. EA
181 151 PBK Architects, Houston, Texas A
182 179 Otak Inc., Lake Oswego, Ore.† EA
183 256 WATG, Irvine, Calif. A
184 180 Vanderweil Engineers, Boston, Mass.† E
185 178 The Burke Group, Rosemont, Ill.† E
186 183 Strand Associates Inc., Madison, Wis. E
187 194 Ninyo & Moore, San Diego, Calif. GE
188 216 HAKS Engineers, Architects and Land Surveyors, New York, N.Y. E
189 212 Bergmann Associates Inc., Rochester, N.Y. EA
190 184 Schnabel Engineering Inc., Glen Allen, Va.† GE
191 204 Patrick Engineering Inc., Lisle, Ill.† E
192 213 Civil & Environmental Consultants Inc., Pittsburgh, Pa. E
193 ** USS Cal Builders Inc., Stanton, Calif. EC
194 193 DOWL HKM, Anchorage, Alaska E
195 188 Heery International Inc., Atlanta, Ga.† AEC
196 170 Kaplan McLaughlin Diaz (KMD), San Francisco, Calif.† A
197 196 Walter P Moore, Houston, Texas E
198 175 ASRC Energy Services, Anchorage, Alaska† EC
199 199 Parkhill, Smith & Cooper Inc., Lubbock, Texas EA
200 220 FKP Architects Inc., Houston, Texas† A

ENR Top Lists or selections from the directory databases are available on pressure-sensitive labels or computer printouts. Included are the principal officer's name and title, company name and address, and phone and fax numbers. Click here for information on purchasing mailing lists.

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