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County Road 18 over Rio Grande River

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

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

County Road 18 over Rio Grande River in Rio Grande County, Colorado, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1998, making it 27 years old at the 2025 inventory.
It carries about 249 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 18 of the 73 inventoried bridges in Rio Grande County rated good (24.7%); 0 (0.0%) 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	Continuous steel stringer or multi-beam girder
Length	about 171 ft
Location	.3 Mi N of SH 160
NBI structure number	RGD018-00.30A
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
US 160 Ml over Empire Canal	1972	7,700	Fair
US 160 Ml over Willow Creek	1977	4,800	Good
US 160 Ml over S Fk Rio Grande River	1981	4,800	Fair
US 160 Ml over Monte Vista Canal	1970	4,600	Fair
US 285 Ml over Rio Grande	1971	4,500	Good
SH 112 Ml over Farmers Union Canal	1938	2,300	Fair