1. Transportation Dept 14117 Route 136, Dyersville, IA 52040 Coordinate: 42.5023,-91.1096 Phone: (563) 875-7615
2. Maintenance Engineer's Office 14117 Route 136, Dyersville, IA 52040 Coordinate: 42.5023,-91.1096 Phone: (563) 875-2375