St. Clair County construction: bids, contractors and projects

MDOT lettings, listed contractors and project news for St. Clair County, Michigan, updated daily from public records.

St. Clair County is part of our Bay Region coverage area and falls under MDOT Bay Region, headquartered in Saginaw. MDOT's public list includes 14 construction contractors with a St. Clair County address: 14 prequalified contractors and 0 specialty contractors who have added a listing. The largest single group is MDOT Prequalified Contractor (14). Most are based in East China, Casco, Marysville.

MDOT's MDOT letting schedule currently has 1 upcoming proposal in St. Clair County, the next on Nov 6, 2026.

Upcoming MDOT lettings in St. Clair County

Contractors based in St. Clair County

Counts come from MDOT's prequalified contractors list for firms with an address in St. Clair County. LARA sells its full licensee lists, which we have not bought, so other contractors are not listed yet; any firm can add or claim a listing.

• MDOT Prequalified Contractor: 14

Find St. Clair County subcontractors Find St. Clair County general contractors

St. Clair County project news

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How to bid public work in St. Clair County

State trunkline work in St. Clair County is let by MDOT in Lansing; the county is in MDOT's Bay Region (MDOT regions). Each advertisement lists the prequalification classification a prime needs. See how to bid MDOT contracts.

State agencies buy through State of Michigan Procurement (see the vendor registration guide). Before you bid, check licensing (licensing guide) and your payment protections (lien deadlines).

Statewide rules that apply here

• Michigan construction lien and bond deadlines: 20 days, 90 days and one year

Nearby counties

Bay Region region: Arenac · Bay · Clare · Genesee · Gladwin · Gratiot · Huron · Isabella · Lapeer · Midland · Saginaw · Sanilac · Shiawassee · Tuscola

Also in MDOT Region 4: (same as above)