Bridge conditions in Conejos County, Colorado
63 inventoried bridges · 8 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Of the 63 Conejos County bridges in the federal inventory, 8 carry a poor rating. That 12.7% share is roughly 2x the national average.
- 8 of the 63 bridges in Conejos County, Colorado, are rated in poor condition (12.7%) in the 2025 National Bridge Inventory, as of .
- 23 bridges (36.5%) are rated good and 32 (50.8%) fair.
- The median Conejos County bridge was built in 1987.
- The busiest poor-rated bridge is US 285 Ml over Conejos Riv.overflow (built 1929), carrying about 3,200 vehicles a day.
Good 36.5% · Fair 50.8% · Poor 12.7% of 63 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 285 Ml over Conejos Riv.overflow | 1929 | 3,200 | Poor |
| County Road V over Conejos River | 1947 | 136 | Poor |
| County Road M over Conejos River | 1987 | 118 | Poor |
| County Road 6 over Alamosa River | 1968 | 102 | Poor |
| Fdr 250 over Alamosa River | 1953 | 79 | Poor |
| County Road 16 over Rio San Antonio | 1976 | 59 | Poor |
| County Road G over Rio Grande River | 1892 | 37 | Poor |
| County Road 430 over Conejos River | 1960 | 6 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 285 Ml over Alamosa Creek | 1959 | 5,200 | Fair |
| US 285 Ml over La Jara Creek | 1959 | 5,200 | Good |
| US 285 Ml over Conejos Riv.overflow | 1929 | 3,200 | Poor |
| US 285 Ml over Conejos River | 1929 | 3,200 | Fair |
| SH 15 Ml over La Jara Creek | 1938 | 1,300 | Fair |
| US 285 Ml over Rio San Antonio | 1938 | 1,200 | Fair |
| SH 17 Ml over Br. of Conejos River | 1958 | 960 | Fair |
| SH 17 Ml over Conejos River Ovflw | 1958 | 960 | Good |
| SH 17 Ml over Conejos River | 1958 | 960 | Fair |
| SH 371 Ml over Alamosa River | 1954 | 790 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Colorado: Colorado bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.