Tuscola County Bridge Report Card
Tuscola County scores 66 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Tuscola County, Michigan
Tuscola County has 241 bridges in the National Bridge Inventory, with 10 rated poor and 34 rated scour-critical. Its poor-condition share of 4.1% is at or below the 11.0% statewide average. Poor-condition bridges carry about 20,027 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Tuscola County a Bridge Condition Exposure Score of 66/100 (D). The county has 241 bridges in the National Bridge Inventory, including 10 in poor condition and 34 rated scour-critical. Poor-condition bridges carry about 20,027 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.
How the Score Breaks Down
| Factor | Weight | County Value | Penalty |
|---|---|---|---|
| Poor-condition bridge share | 40 | 4.1% | 8.3 |
| Poor-condition traffic exposure | 25 | 7.8% of measured traffic | 5.9 |
| Scour-critical bridge share | 20 | 14.1% | 20.0 |
| Average age vs national baseline | 10 | 46 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 256,504 measured daily crossings | 0.0 |
Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.
County Comparisons
| County Poor-Condition Share | 4.1% |
| State Poor-Condition Share | 11.0% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 14.1% |
| Average Bridge Age | 46 years |
| Poor-Condition Traffic Exposure | 20,027 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Tuscola County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| M-46 over Cheboygan & Branches Drn | Poor condition + traffic exposure | Poor | 6,701 | 1939 |
| Dodge Road over South Br White Creek | Poor condition + traffic exposure | Poor | 120 | 1971 |
| M-46 over Houghton Creek | Poor condition + traffic exposure | Poor | 5,255 | 1939 |
| M-15 over Cheboyganing Creek | Poor condition + traffic exposure | Poor | 2,842 | 1929 |
| M-46 over White Creek #2 | Poor condition + traffic exposure | Poor | 2,547 | 1966 |
| Gilford Road over Br 1 Northwest Drain | Poor condition + traffic exposure | Poor | 1,700 | 1972 |
| Oak Road over Gooding Creek | Poor condition + traffic exposure | Poor | 510 | 1965 |
| Shabbona Road over Mud Creek Drain Outlet | Poor condition + traffic exposure | Poor | 140 | 1974 |
| Loomis Road over Wiscoggin Drain | Poor condition + traffic exposure | Poor | 135 | 1930 |
| Cass City Road over Southgate Drain | Poor condition + traffic exposure | Poor | 77 | 1945 |
Important safety note
Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.