Dunigan Bros., Inc. Search | Advanced Search | New Members | Coupons and Discounts | All Categories Other >> INDOT Prequalified Contractors as of 05/01/2025 >> E(E) Small Structure, Culverts and Drainage Items Dunigan Bros., Inc. 911 E South StJackson, MI 49203 | map | directions (517) 787-4720 Visit Site