County Road 9.5 over ST Vrain River
GoodWeld County, Colorado · 1 MI N of SH 119 · Structure no. WEL009.5-024.5A
- Built
- 1999
- 26 years old
- Condition
- Good
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 302 ft
- 4 main spans
- Daily traffic
- 11,064
- 2022 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
County Road 9.5 over ST Vrain River is a prestressed concrete continuous stringer/multi-beam or girder carrying County Road 9.5 over ST Vrain River in Weld County, Colorado. It was built in 1999, so it is 26 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 11,064 vehicles a day, roughly 23% of them trucks, projected to reach 15,711 by 2042. The structure is 302 ft (92 m) long and 46 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 9.5 over ST Vrain River built?
It was built in 1999, making it 26 years old in 2025.
What condition is County Road 9.5 over ST Vrain 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 March 2024.
How much traffic does County Road 9.5 over ST Vrain River carry?
About 11,064 vehicles per day (2022 count), of which roughly 23% are trucks.
How long is County Road 9.5 over ST Vrain River?
The structure is 302 ft (92 m) long with a longest span of 85 ft (25.9 m) and a deck 46 ft wide.
Who owns County Road 9.5 over ST Vrain River?
It is owned by the Town or Township Highway Agency.