River Rim Road over Big Thompson River
FairPosted for loadLarimer County, Colorado · 20 Ft S of US HWY 34 · Structure no. LRB2-588BTC
- Built
- 1977
- 48 years old
- Condition
- Fair
- inspected April 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 100 ft
- 2 main spans
- Daily traffic
- 380
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
River Rim Road over Big Thompson River is a prestressed concrete tee beam carrying River Rim Road over Big Thompson River 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. Its operating status is: posted for other load-capacity restriction.
It carries about 380 vehicles a day, roughly 15% of them trucks, projected to reach 475 by 2042. The structure is 100 ft (30.4 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was River Rim Road over Big Thompson River built?
It was built in 1977, making it 48 years old in 2025.
What condition is River Rim Road over Big Thompson 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 April 2023.
How much traffic does River Rim Road over Big Thompson River carry?
About 380 vehicles per day (2023 count), of which roughly 15% are trucks.
How long is River Rim Road over Big Thompson River?
The structure is 100 ft (30.4 m) long with a longest span of 49 ft (14.8 m) and a deck 24 ft wide.
Who owns River Rim Road over Big Thompson River?
It is owned by the County Highway Agency.