SH 157 Ml Nbnd over South Boulder Road
FairBoulder County, Colorado · 0.08 MI N of JCT US 36 · Structure no. E-16-HX
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 185 ft
- 2 main spans
- Daily traffic
- 19,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
SH 157 Ml Nbnd over South Boulder Road is a steel continuous stringer/multi-beam or girder carrying SH 157 Ml Nbnd over South Boulder Road in Boulder County, Colorado. It was built in 1973, so it is 52 years old, older 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 19,000 vehicles a day, roughly 4% of them trucks, projected to reach 20,330 by 2040. The structure is 185 ft (56.3 m) long and 52 ft wide. If it were closed, the detour would be 0.6 mi (1 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 157 Ml Nbnd over South Boulder Road built?
It was built in 1973, making it 52 years old in 2025.
What condition is SH 157 Ml Nbnd over South Boulder Road 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 Nbnd over South Boulder Road carry?
About 19,000 vehicles per day (2020 count), of which roughly 4% are trucks.
How long is SH 157 Ml Nbnd over South Boulder Road?
The structure is 185 ft (56.3 m) long with a longest span of 94 ft (28.7 m) and a deck 52 ft wide.
Who owns SH 157 Ml Nbnd over South Boulder Road?
It is owned by the State Highway Agency.