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Bridge conditions in Dolores County, Colorado

27 inventoried bridges · 3 rated poor · 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Of the 27 Dolores County bridges in the federal inventory, 3 carry a poor rating. That 11.1% share is roughly 2x the national average.

3 of the 27 bridges in Dolores County, Colorado, are rated in poor condition (11.1%) in the 2025 National Bridge Inventory, as of August 20, 2026.
4 bridges (14.8%) are rated good and 20 (74.1%) fair.
The median Dolores County bridge was built in 1960.
The busiest poor-rated bridge is US 491 Ml over Alkali Creek (built 1937), carrying about 3,400 vehicles a day.

Good 14.8% · Fair 74.1% · Poor 11.1% of 27 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 491 Ml over Alkali Creek	1937	3,400	Poor
US 491 Ml over Coal Bed Creek	1970	2,600	Poor
County Road D over Disappointment Creek	1966	6	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
US 491 Ml over Dove Creek	1935	4,700	Fair
US 491 Ml over Alkali Creek	1937	3,400	Poor
US 491 Ml over Cross Canyon	1937	3,400	Fair
US 491ML over Sharps Creek	1937	3,400	Fair
US 491 Ml over Draw	1937	3,400	Fair
US 491 Ml over Monument Creek	1958	3,200	Fair
US 491 Ml over Cahone Creek	1937	3,200	Fair
US 491 Ml over Coal Bed Creek	1970	2,600	Poor
SH 145 Ml over Dolores River	1968	2,100	Fair
SH 141 Ml over Monument Creek	1960	460	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.