| Business | Phone |
| Donan Engineering Co Inc 5659 W 73rd St, Indianapolis 46278 | (317) 347-5151 |
| Dura Engineering & Survey 6350 Westhaven Dr # H, Indianapolis 46254 | (317) 821-8300 |
| E Gineering Llc 10401 N Meridian St # 150, Indianapolis 46290 | (317) 616-3974 |
| Engineering Concepts 11038 Woods Bay Ln, Indianapolis 46236 | (317) 826-1558 |
| Scott Engineering 6695 E 34th St, Indianapolis 46226 | (317) 549-2082 |
| Madison Engineering 4010 W 86th St, Indianapolis 46268 | (317) 870-9320 |
| International Engineering 4010 W 86th St, Indianapolis 46268 | (317) 870-9316 |