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County Road 10 over Alamosa River

Conejos County, Colorado · rated Good in the 2025 National Bridge Inventory

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

County Road 10 over Alamosa River in Conejos County, Colorado, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 7 (good condition) on the 0-9 scale.
It was built in 1989, making it 36 years old at the 2025 inventory.
It carries about 102 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 23 of the 63 inventoried bridges in Conejos County rated good (36.5%); 8 (12.7%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete tee beam
Length	about 49 ft
Location	.6 Mi N of SH 15
NBI structure number	CON02.8W-14.6NA
Condition class	Good

Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.

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