Home › Colorado › Routt County › County Road 64A over Elk River

County Road 64A over Elk River

Routt County, Colorado · rated Fair in the 2025 National Bridge Inventory

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

County Road 64A over Elk River in Routt County, Colorado, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1980, making it 45 years old at the 2025 inventory.
It carries about 86 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 48 of the 97 inventoried bridges in Routt County rated fair (49.5%); 7 (7.2%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Timber stringer or multi-beam girder
Length	about 64 ft
Location	0.3 Mi S of Co Rd 64
NBI structure number	107064A00.20924
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US 40 Ml over Fish Creek	1980	28,000	Fair
US 40 Ml over Mt Werner Road	1980	23,000	Fair
US 40 Ml over Walton Creek	1990	9,200	Fair
US 40 Ml over Shelton Ditch	1954	6,400	Poor
Fish Crk Falls Rd over Spring Creek	1973	5,949	Fair
US 40 Ml over E Fork Elk River	2013	5,700	Good