SH 133 Ml over N Fk Gunnison River
Gunnison County, Colorado · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SH 133 Ml over N Fk Gunnison River in Gunnison County, Colorado, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1982, making it 43 years old at the 2025 inventory.
- It carries about 1,200 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 24 of the 101 inventoried bridges in Gunnison County rated good (23.8%); 5 (5.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated October 2024, on a 24-month routine inspection cycle.
- 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.
View this bridge on a map → (38.93091, -107.4087)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 283 ft |
| Location | 1.5 Mi NE of Somerset |
| NBI structure number | I-07-Q |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.
Busiest bridges in Gunnison County
| 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 |
All bridges nearby: Gunnison County, CO bridge conditions · every bridge in Gunnison County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.