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County Road M.5 over Culebra Creek

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

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

County Road M.5 over Culebra Creek in Costilla 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 1992, making it 33 years old at the 2025 inventory.
It carries about 84 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 4 of the 38 inventoried bridges in Costilla County rated good (10.5%); 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	Steel stringer or multi-beam girder
Length	about 63 ft
Location	.2 Mi SE of CR L.7
NBI structure number	CS152A-S0.1152A
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 Canal	1970	5,000	Good
County Road P.6 over Unnamed Drainage	2006	1,230	Fair
SH 159 Ml over Culebra Creek	1936	800	Fair
C.rd Trinchera over Sangre De Cristo Creek	1989	531	Fair
County Road 21 over Culebra Creek	1955	475	Fair
SH 142 Ml over Rito Seco Creek	1936	440	Good