Forest Road 305 over M Thompson CR
FairPitkin County, Colorado · 7.8 MI SW of Carbondale · Structure no. 021503000001031
- Built
- 1956
- 69 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 24 ft
- 1 main span
- Daily traffic
- 10
- 1994 count
- Owner
- Federal
- U.S. Forest Service
About this bridge
Forest Road 305 over M Thompson CR is a wood or timber stringer/multi-beam or girder carrying Forest Road 305 over M Thompson CR in Pitkin County, Colorado. It was built in 1956, so it is 69 years old, older 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 6 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 10 vehicles a day, projected to reach 15 by 2045. The structure is 24 ft (7.2 m) long and 15 ft wide. If it were closed, the detour would be 98.2 mi (158 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Forest Road 305 over M Thompson CR built?
It was built in 1956, making it 69 years old in 2025.
What condition is Forest Road 305 over M Thompson CR 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 August 2024.
How much traffic does Forest Road 305 over M Thompson CR carry?
About 10 vehicles per day (1994 count).
How long is Forest Road 305 over M Thompson CR?
The structure is 24 ft (7.2 m) long with a longest span of 23 ft (6.9 m) and a deck 15 ft wide.
Who owns Forest Road 305 over M Thompson CR?
It is owned by the U.S. Forest Service and maintained by the County Highway Agency.