| Business | Phone |
| Johnson & Anderson Inc 2685 Holton Rd, Muskegon 49445 | (231) 744-2487 |
| Rhoades Engineering 4801 Henry St, Muskegon 49441 | (231) 798-4328 |
| Robo Restores 147 W Norton Ave, Muskegon 49444 | (231) 733-1193 |
| Prein & Newhof 4910 Stariha Dr, Muskegon 49441 | (231) 798-0101 |
| Engineering Dimensions Inc 975 W Broadway Ave, Muskegon 49441 | (231) 755-2200 |
| Ennis Associates 3324 Maple Grove Rd, Muskegon 49441 | (231) 755-1234 |
| Bennett Engineering Inc 1081 Holton Rd, Muskegon 49445 | (231) 744-8989 |
| Bos Engineering 835 E Fennwood Cir, Muskegon 49445 | (231) 744-1379 |
| Soils & Structures Inc 6480 Grand Haven Rd, Muskegon 49441 | (231) 798-4127 |