County Road 311 over Colorado River
FairGarfield County, Colorado · 0.2 Miles South of I-70 · Structure no. GAR311-12.69
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 262 ft
- 2 main spans
- Daily traffic
- 2,957
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
County Road 311 over Colorado River is a prestressed concrete continuous stringer/multi-beam or girder carrying County Road 311 over Colorado River in Garfield County, Colorado. It was built in 1983, so it is 42 years old, younger than the Colorado average of 42.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 2,957 vehicles a day, roughly 42% of them trucks, projected to reach 3,756 by 2042. The structure is 262 ft (79.8 m) long and 33 ft wide. If it were closed, the detour would be 8.1 mi (13 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was County Road 311 over Colorado River built?
It was built in 1983, making it 42 years old in 2025.
What condition is County Road 311 over Colorado River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2023.
How much traffic does County Road 311 over Colorado River carry?
About 2,957 vehicles per day (2023 count), of which roughly 42% are trucks.
How long is County Road 311 over Colorado River?
The structure is 262 ft (79.8 m) long with a longest span of 127 ft (38.6 m) and a deck 33 ft wide.
Who owns County Road 311 over Colorado River?
It is owned by the County Highway Agency.