| # | Company name | Role | # of Projects |
|---|---|---|---|
| 1 | AGNE-WAHLEN-DAUBENBÜCHEL - INGENIEURGEMEINSCHAFT AWD | engineering association | 1 |
| 2 | Al Underhill & Associates | engineering association | 1 |
| 3 | Arenas y Asociados, Ingeniería de diseño | engineering association | 1 |
| 4 | Barry Isett & Associates | engineering association | 0 |
| 5 | BDC Engineers | engineering association | 9 |
| 6 | Bundesingenieurkammer | engineering association | 0 |
| 7 | Camp Dresser McKee Inc | engineering association | 0 |
| 8 | Construction Control Inc | engineering association | 0 |
| 9 | Construction Control Inc. | engineering association | 0 |
| 10 | David M. Duller | engineering association | 0 |
| 11 | Design Engineering Incorporated | engineering association | 0 |
| 12 | Element Service Inc. | engineering association | 0 |
| 13 | Exstrado Consulting Engineers | engineering association | 0 |
| 14 | Fanning Fanning & Associates Inc. | engineering association | 6 |
| 15 | Gorrill-Palmer Consulting Engineers | engineering association | 2 |
| 16 | H2M Group | engineering association | 1 |
| 17 | I2C Ingénierie | engineering association | 1 |
| 18 | Ingenieurkammer Bau Nordrhein-Westfalen | engineering association | 0 |
| 19 | Ingenieurkammer des Landes Hessen | engineering association | 0 |
| 20 | ITG Darmstadt | engineering association | 0 |