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County Road 4 over Big Hole Gulch

Moffat County, Colorado · rated Poor in the 2025 National Bridge Inventory

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

County Road 4 over Big Hole Gulch in Moffat County, Colorado, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
It was built in 1950 and reconstructed in 1988, making it 75 years old at the 2025 inventory.
It carries about 167 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 5 of the 80 inventoried bridges in Moffat County rated poor (6.2%); 5 (6.2%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Continuous steel stringer or multi-beam girder
Length	about 27 ft
Location	19.6 Mi West of St Hwy 13
NBI structure number	MOF4-19.60
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
US 40 Ml over Elkhead River	1992	4,200	Good
SH 394 Ml over Yampa River	1985	3,100	Good
US 40 Ml WB over Fortification Creek	1952	3,000	Fair
SH 13 Ml over Yampa River	1972	2,800	Fair
SH 13 Ml over Pine Ridge Gulch	1973	2,800	Fair
SH 13 Ml over RR Spur	1978	2,800	Fair