SH 157 Nbnd over Four Mile Canyon Creek
GoodBoulder County, Colorado · Two Miles N of Boulder Ci · Structure no. D-16-DJ
- Built
- 1988
- 37 years old
- Condition
- Good
- inspected July 2023
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 132 ft
- 2 main spans
- Daily traffic
- 20,500
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
SH 157 Nbnd over Four Mile Canyon Creek is a prestressed concrete continuous box beam or girders - single or spread carrying SH 157 Nbnd over Four Mile Canyon Creek in Boulder County, Colorado. It was built in 1988, so it is 37 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 20,500 vehicles a day, roughly 3% of them trucks, projected to reach 22,550 by 2040. The structure is 132 ft (40.3 m) long and 40 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 157 Nbnd over Four Mile Canyon Creek built?
It was built in 1988, making it 37 years old in 2025.
What condition is SH 157 Nbnd over Four Mile Canyon 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 July 2023.
How much traffic does SH 157 Nbnd over Four Mile Canyon Creek carry?
About 20,500 vehicles per day (2020 count), of which roughly 3% are trucks.
How long is SH 157 Nbnd over Four Mile Canyon Creek?
The structure is 132 ft (40.3 m) long with a longest span of 64 ft (19.6 m) and a deck 40 ft wide.
Who owns SH 157 Nbnd over Four Mile Canyon Creek?
It is owned by the State Highway Agency.