County Road 45B over Little Thompson River
GoodLarimer County, Colorado · 1.0 Mile East 36 · Structure no. LR45B-0.1-4F-A
- Built
- 2015
- 10 years old
- Condition
- Good
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 71 ft
- 1 main span
- Daily traffic
- 122
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
County Road 45B over Little Thompson River is a prestressed concrete box beam or girders - multiple carrying County Road 45B over Little Thompson River in Larimer County, Colorado. It was built in 2015, so it is 10 years old, younger than the Colorado average of 42.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 122 vehicles a day, roughly 18% of them trucks, projected to reach 153 by 2042. The structure is 71 ft (21.6 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was County Road 45B over Little Thompson River built?
It was built in 2015, making it 10 years old in 2025.
What condition is County Road 45B over Little Thompson River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.
How much traffic does County Road 45B over Little Thompson River carry?
About 122 vehicles per day (2023 count), of which roughly 18% are trucks.
How long is County Road 45B over Little Thompson River?
The structure is 71 ft (21.6 m) long with a longest span of 64 ft (19.6 m) and a deck 29 ft wide.
Who owns County Road 45B over Little Thompson River?
It is owned by the County Highway Agency.