| Business | Phone |
| Howard R Green Co 8710 Earhart Ln Sw, Cedar Rapids 52404 | (319) 841-4000 |
| David L Johnson 115 3rd St Se, Cedar Rapids 52401 | (319) 362-0313 |
| Shive-Hattery Inc 201 3rd Ave Se 500, Cedar Rapids 52401 | (319) 364-0227 |
| Shoemaker & Haaland Pro Engrs 3343 Southgate Ct Sw 109, Cedar Rapids 52404 | (319) 286-8888 |
| Alltrans Inc 4403 1st Ave Se 301, Cedar Rapids 52402 | (319) 393-8726 |
| Ament Inc 5825 Dry Creek Ln Ne, Cedar Rapids 52402 | (319) 378-1401 |
| Anderson-Bogert Engineers Inc 4001 River Ridge Dr Ne, Cedar Rapids 52402 | (319) 377-4629 |
| Design Engineers 2801 6th St Sw, Cedar Rapids 52404 | (319) 364-1944 |
| Donatech 5300 N Park Pl Ne 200, Cedar Rapids 52402 | (319) 377-2300 |
| Engineering Alliance Inc 4211 Glass Rd Ne, Cedar Rapids 52402 | (319) 365-9565 |
| Navdyne 4239 Morelle Rd Ne, Cedar Rapids 52411 | (319) 393-0727 |
| Ric Inc-Raiche Ind Conslnts 3260 Southgate Pl Sw, Cedar Rapids 52404 | (319) 247-5581 |