Bridge conditions in Grand County, Colorado
88 inventoried bridges · 5 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 88 bridges in Grand County: 37 rated good, 46 fair, and 5 poor.
- 5 of the 88 bridges in Grand County, Colorado, are rated in poor condition (5.7%) in the 2025 National Bridge Inventory, as of .
- 37 bridges (42.0%) are rated good and 46 (52.3%) fair.
- The median Grand County bridge was built in 1990.
- The busiest poor-rated bridge is US 40 Ml over Crooked Creek (built 1941), carrying about 11,000 vehicles a day.
Good 42.0% · Fair 52.3% · Poor 5.7% of 88 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 40 Ml over Crooked Creek | 1941 | 11,000 | Poor |
| US 34 Ml over Stillwater Creek | 1938 | 4,900 | Poor |
| SH 9 Ml over UP RR | 1942 | 3,500 | Poor |
| Wapiti Street over Fraser River | 1996 | 640 | Poor |
| Holzwarth Access R over Colorado River | 1982 | 2 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 40 Ml over UP RR | 1985 | 11,000 | Fair |
| US 40 Ml over Fraser River | 1985 | 11,000 | Fair |
| US 40 Ml over Vasquez Creek | 1938 | 11,000 | Fair |
| US 40 Ml over Crooked Creek | 1941 | 11,000 | Poor |
| US 40 Ml over Fraser River | 1942 | 11,000 | Fair |
| US 40 Ml over Pedestrian Underpass | 2004 | 11,000 | Good |
| US 40 Ml over St Louis Creek | 1975 | 9,800 | Good |
| US 40 Ml over UP RR | 1975 | 8,900 | Fair |
| US 34 Ml over Colorado River | 1999 | 6,300 | Good |
| US 34 Ml over Colorado River Overflow | 1999 | 6,300 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Colorado: Colorado bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.