SH 34 Access Road over Big Thompson River Ar
FairLarimer County, Colorado · In Drake · Structure no. C-15-AK
- Built
- 1977
- 48 years old
- Condition
- Fair
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 62 ft
- 1 main span
- Daily traffic
- 48
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SH 34 Access Road over Big Thompson River Ar is a steel stringer/multi-beam or girder carrying SH 34 Access Road over Big Thompson River Ar in Larimer County, Colorado. It was built in 1977, so it is 48 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 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 48 vehicles a day, roughly 2% of them trucks, projected to reach 60 by 2042. The structure is 62 ft (18.9 m) long and 27 ft wide. If it were closed, the detour would be 62.1 mi (100 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 SH 34 Access Road over Big Thompson River Ar built?
It was built in 1977, making it 48 years old in 2025.
What condition is SH 34 Access Road over Big Thompson River Ar 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 SH 34 Access Road over Big Thompson River Ar carry?
About 48 vehicles per day (2023 count), of which roughly 2% are trucks.
How long is SH 34 Access Road over Big Thompson River Ar?
The structure is 62 ft (18.9 m) long with a longest span of 60 ft (18.4 m) and a deck 27 ft wide.
Who owns SH 34 Access Road over Big Thompson River Ar?
It is owned by the State Highway Agency.