| Business | Phone |
| Hmb Professional Engineers 3 Hmb Cir, Frankfort 40601 | (502) 695-9800 |
| Capital Link 225 Capitol Ave, Frankfort 40601 | (502) 223-8967 |
| Baker Engineering 226 River Valley Rd, Frankfort 40601 | (502) 223-7807 |
| Otis Engineering 234 W Main St 2, Frankfort 40601 | (502) 352-2808 |