San Miguel County Bridge Report Card
San Miguel County scores 92 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
San Miguel County, Colorado
San Miguel County has 59 bridges in the National Bridge Inventory, with 1 rated poor and 1 rated scour-critical. Its poor-condition share of 1.7% is at or below the 4.6% statewide average. Poor-condition bridges carry about 833 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives San Miguel County a Bridge Condition Exposure Score of 92/100 (A). The county has 59 bridges in the National Bridge Inventory, including 1 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 833 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 | 1.7% | 3.4 |
| Poor-condition traffic exposure | 25 | 2.3% of measured traffic | 1.7 |
| Scour-critical bridge share | 20 | 1.7% | 3.4 |
| Average age vs national baseline | 10 | 38 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 36,440 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 | 1.7% |
| State Poor-Condition Share | 4.6% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 1.7% |
| Average Bridge Age | 38 years |
| Poor-Condition Traffic Exposure | 833 vehicles/day |
Bridges to Watch
Top Bridges to Watch in San Miguel County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| City ST - Mahoney over San Miguel River | Poor condition + traffic exposure | Poor | 833 | 1995 |
| Townsend Street over Cornet Creek | Scour-critical foundation rating | Fair | 50 | 2006 |
| SH 145 Ml over San Miguel River | High traffic | Fair | 7,600 | 1960 |
| Mtn Village Blv over Pedestrian/skier | High traffic | Good | 5,331 | 1990 |
| SH 145 Ml over Leopard Creek | High traffic | Good | 4,700 | 2013 |
| Mtn Village Blv over Pedestrian / Skier | High traffic | Fair | 4,499 | 1985 |
| Mtn Village Blv over Pedestrian / Skier | High traffic | Good | 2,195 | 1990 |
| SH 145 Ml over Goodenough Gulch | High traffic | Fair | 1,900 | 1939 |
| SH 145 Ml over San Miguel River | High traffic | Fair | 1,800 | 1942 |
| Benchmark Drive over Pedestrian/skier | High traffic | Fair | 974 | 1995 |
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.