Second Avenue over St. Vrain Creek
GoodBoulder County, Colorado · 0.15 MI S of HWY 36 · Structure no. LY2ND-S.15-36
- Built
- 2021
- 4 years old
- Condition
- Good
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 142 ft
- 1 main span
- Daily traffic
- 946
- 2023 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Second Avenue over St. Vrain Creek is a prestressed concrete stringer/multi-beam or girder carrying Second Avenue over St. Vrain Creek in Boulder County, Colorado. It was built in 2021, so it is 4 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 946 vehicles a day, roughly 9% of them trucks, projected to reach 1,135 by 2042. The structure is 142 ft (43.3 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Second Avenue over St. Vrain Creek built?
It was built in 2021, making it 4 years old in 2025.
What condition is Second Avenue over St. Vrain Creek 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 January 2025.
How much traffic does Second Avenue over St. Vrain Creek carry?
About 946 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is Second Avenue over St. Vrain Creek?
The structure is 142 ft (43.3 m) long with a longest span of 136 ft (41.5 m) and a deck 42 ft wide.
Who owns Second Avenue over St. Vrain Creek?
It is owned by the Town or Township Highway Agency.