SH 157 Ml over Boulder Whiterock Ditch
FairBoulder County, Colorado · In Boulder · Structure no. D-16-DE
- Built
- 1987
- 38 years old, rebuilt 2005
- Condition
- Fair
- inspected July 2023
- Type
- Culvert
- Concrete
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 34,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
SH 157 Ml over Boulder Whiterock Ditch is a concrete culvert carrying SH 157 Ml over Boulder Whiterock Ditch in Boulder County, Colorado. It was built in 1987 and reconstructed in 2005, so it is 38 years old, younger 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 34,000 vehicles a day, roughly 3% of them trucks, projected to reach 36,720 by 2040. The structure is 21 ft (6.4 m) long and 307 ft wide. If it were closed, the detour would be 1.9 mi (3 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 157 Ml over Boulder Whiterock Ditch built?
It was built in 1987, making it 38 years old in 2025. It was reconstructed in 2005.
What condition is SH 157 Ml over Boulder Whiterock Ditch 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 July 2023.
How much traffic does SH 157 Ml over Boulder Whiterock Ditch carry?
About 34,000 vehicles per day (2020 count), of which roughly 3% are trucks.
How long is SH 157 Ml over Boulder Whiterock Ditch?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 307 ft wide.
Who owns SH 157 Ml over Boulder Whiterock Ditch?
It is owned by the State Highway Agency.