| Business | Phone |
| Blackhawk Engineering Co 2 Insight Dr, Platteville 53818 | (608) 348-4433 |
| D F Burbach Municipal & Civil 5974 State Road 80 And 81, Platteville 53818 | (608) 348-3262 |
| Forensic Engineering Svc 40 Preston Dr, Platteville 53818 | (608) 348-3942 |
| Southwest Design Assoc Inc 190 Market St, Platteville 53818 | (608) 348-3821 |