Cheboygan County Bridge Report Card
Cheboygan County scores 63 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Cheboygan County, Michigan
Cheboygan County has 73 bridges in the National Bridge Inventory, with 10 rated poor and 2 rated scour-critical. Its poor-condition share of 13.7% is above the 11.0% statewide average. Poor-condition bridges carry about 7,105 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Cheboygan County a Bridge Condition Exposure Score of 63/100 (D). The county has 73 bridges in the National Bridge Inventory, including 10 in poor condition and 2 rated scour-critical. Poor-condition bridges carry about 7,105 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 | 13.7% | 27.4 |
| Poor-condition traffic exposure | 25 | 4.1% of measured traffic | 3.1 |
| Scour-critical bridge share | 20 | 2.7% | 5.5 |
| Average age vs national baseline | 10 | 51 years vs 48 nationally | 1.3 |
| Traffic-data completeness | 5 | 172,905 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 | 13.7% |
| State Poor-Condition Share | 11.0% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 2.7% |
| Average Bridge Age | 51 years |
| Poor-Condition Traffic Exposure | 7,105 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Cheboygan County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Orchard Beach Road over Black River | Poor condition + traffic exposure | Poor | 2,200 | 1976 |
| Black River Road over Upper Black River | Poor condition + traffic exposure | Poor | 1,500 | 1935 |
| Old 27 over Sturgeon River | Poor condition + traffic exposure | Poor | 1,260 | 1991 |
| Topinabee Mail RTE over I-75 NB | Poor condition + traffic exposure | Poor | 550 | 1960 |
| Trowbridge Road over W Br Sturgeon River | Poor condition + traffic exposure | Poor | 520 | 1949 |
| Afton Road over Pigeon River | Poor condition + traffic exposure | Poor | 500 | 1982 |
| Barclay AVE over Black River | Poor condition + traffic exposure | Poor | 420 | 1991 |
| Paradise Lake Road over Mud Creek | Poor condition + traffic exposure | Poor | 100 | 1963 |
| Freeway Trail over Sturgeon River | Poor condition + traffic exposure | Poor | 30 | 1978 |
| New Nature AVE over Sturgeon River | Poor condition + traffic exposure | Poor | 25 | 1900 |
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.