47th Street over SH 157 Ml
FairBoulder County, Colorado · Near SH 119 in Boulder · Structure no. D-16-DL
- Built
- 1989
- 36 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 390 ft
- 4 main spans
- Daily traffic
- 12,000
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
47th Street over SH 157 Ml is a prestressed concrete continuous stringer/multi-beam or girder carrying 47th Street over SH 157 Ml in Boulder County, Colorado. It was built in 1989, so it is 36 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 12,000 vehicles a day, roughly 6% of them trucks, projected to reach 14,400 by 2041. The structure is 390 ft (118.8 m) long and 45 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 |
|---|---|---|
| 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 47th Street over SH 157 Ml built?
It was built in 1989, making it 36 years old in 2025.
What condition is 47th Street over SH 157 Ml 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 47th Street over SH 157 Ml carry?
About 12,000 vehicles per day (2021 count), of which roughly 6% are trucks.
How long is 47th Street over SH 157 Ml?
The structure is 390 ft (118.8 m) long with a longest span of 119 ft (36.3 m) and a deck 45 ft wide.
Who owns 47th Street over SH 157 Ml?
It is owned by the State Highway Agency.