| Rank | Company | 2012 Total Revenue ($) |
| 1 | Jacobs Engineering Group | $2,715,210,000 |
| 2 | AECOM Technology Corp. | $1,610,390,000 |
| 3 | Parsons Brinckerhoff | $337,900,000 |
| 4 | URS Corp. | $314,266,757 |
| 5 | Buro Happold Consulting Engineers | $194,220,000 |
| 6 | Burns & McDonnell | $160,645,000 |
| 7 | Thornton Tomasetti | $124,575,393 |
| 8 | Science Applications International Corp. | $120,249,686 |
| 9 | Merrick & Co. | $103,998,000 |
| 10 | SSOE Group | $103,708,918 |
| 11 | Michael Baker Jr. | $88,880,000 |
| 12 | Day & Zimmermann | $85,898,442 |
| 13 | STV | $80,107,000 |
| 14 | Wiss, Janney, Elstner Associates | $75,000,000 |
| 15 | Dewberry | $72,755,906 |
| 16 | Simpson Gumpertz & Heger | $65,200,000 |
| 17 | Clark Nexsen | $62,273,849 |
| 18 | AKF Group | $62,000,000 |
| 19 | H&A Architects & Engineers | $43,335,401 |
| 20 | Middough | $41,000,000 |
| 21 | Walker Parking Consultants | $36,931,722 |
| 22 | Shive-Hattery | $34,263,616 |
| 23 | Barge, Waggoner, Sumner and Cannon | $30,700,000 |
| 24 | BRPH | $28,890,000 |
| 25 | Bergmann Associates | $25,398,000 |
| 26 | Hixson Architecture, Engineering, Interiors | 21,000,000 |
| 27 | Guernsey | 19,070,104 |
| 28 | Ross & Baruzzini | 16,705,127 |
| 29 | Paulus, Sokolowski and Sartor | 15,200,000 |
| 30 | GRAEF | 13,964,170 |
| 31 | Zak Companies | 13,814,233 |
| 32 | CJL Engineering | 12,992,858 |
| 33 | Spectrum Engineers | 10,890,075 |
| 34 | Davis, Bowen & Friedel | 10,777,296 |
| 35 | Gray | 10,454,722 |
| 36 | Stanley Consultants | 10,151,414 |
| 37 | Primera Engineers | 5,398,000 |
| 39 | GRW | 3,552,200 |
Read the Engineering Giants article
Read BD+C's full Giants 300 Report
Related Stories
| Feb 20, 2014
5 myths about cross laminated timber
A CLT expert clears up several common misconceptions and myths surrounding the use of wood as a building material.
Sponsored | | Feb 20, 2014
Chicago’s historic Wrigley Building renovated to attract tech companies
Purchased in 2011 by a consortium of investors led by BDT Capital Partners, the building’s new owners have recently renovated and reimagined the next life for this architectural landmark—as a hub for tech firms.
| Feb 20, 2014
World's longest desk? Massive, undulating desk accommodates 145 office workers [video]
The desk is built from plywood and one continuous sheet of resin, and can serve all 145 office employees at once.
| Feb 19, 2014
It's a world record! Largest uninterrupted concrete pour kicks off Wilshire Grand project
Guinness World Records verifies the concrete pour as the largest ever
| Feb 19, 2014
Why you should start with a builder, part two
When it’s time to build or expand, the first step is finding a builder that fits your needs. Once you have found a builder, checked their references, visited with their previous clients and are ready to move forward, the next step is answering an initial set of questions that will direct your project.
| Feb 19, 2014
Slight rebound for Architecture Billings Index
After consecutive months of contracting demand for design services, AIA's Architecture Billings Index inched up nearly two points to 50.4 in January, indicating favorable business conditions.
| Feb 19, 2014
Sefaira Adds Daylighting Analysis to Performance Based Design Platform
Sefaira, the leader in software for high performance building design, today announced that its performance based design platform now includes daylighting analysis. With the addition of daylighting, Sefaira combines two critical design metrics in the same tool.
| Feb 19, 2014
Harvard's 'termite robots' can build any thing, any way [video]
The robots build by observing thier environment and then obeying a set of traffic rules programmed by researchers.
| Feb 18, 2014
Illinois leads Top 10 states for LEED in annual USGBC ranking
The U.S. Green Building Council has released its ranking of the Top 10 States for LEED, the world’s most widely used and recognized green building rating system.
| Feb 18, 2014
Study: 90% of healthcare providers say Affordable Care Act is 'step forward,' but major revisions needed
Providers are excited about opportunities to address long-term health issues in the U.S., but worries about the transition persist, according to a new study by Mortenson Construction.
