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SH 133 Ml over West Muddy Creek

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

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

SH 133 Ml over West Muddy Creek in Gunnison County, Colorado, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, 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 930 vehicles a day (traffic count year 2020).
Its listed owner is the state highway agency.
It is one of 72 of the 101 inventoried bridges in Gunnison County rated fair (71.3%); 5 (5.0%) 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	Continuous concrete single box beam
Length	about 145 ft
Location	14 Mi SW of Mcclure Pass
NBI structure number	I-07-L
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
SH 135 Ml over Gunnison River	1950	7,400	Fair
SH 135 Ml over Slate River	1995	7,200	Fair
SH 135 Ml over Slate River	1995	7,200	Fair
US 50 Ml over Gunnison River	1957	6,200	Fair
US 50 Ml over Gunnison River	1957	6,200	Fair
Co Rd 317 over Slate River	1983	5,823	Fair