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County Road 64 over N Fork South Platte Rive

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

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

County Road 64 over N Fork South Platte Rive in Park County, Colorado, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 3 (serious condition) on the 0-9 scale.
It was built in 1960, making it 65 years old at the 2025 inventory.
It carries about 1,401 vehicles a day (traffic count year 2020).
Its listed owner is the county highway agency.
It is one of 3 of the 55 inventoried bridges in Park County rated poor (5.5%); 3 (5.5%) 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

Component	Rating (2025)	FHWA scale meaning
Culvert	3	Serious condition

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

Bridge	Built	Vehicles/day	Condition
US 285 Ml over Deer Creek	1958	14,000	Fair
US 285 Ml over Middle Fk So Platte Rvr	2024	8,000	Good
US 285 Ml over Trout Creek	1937	7,200	Fair
US 285 Ml over N. Fork S. Platte River	1962	6,400	Fair
US 285 Ml over Geneva Creek	1989	6,400	Fair
US 285 Ml over N Fk South Platte Rvr	1989	5,900	Fair