State Route 91 over UP RR Mta Blue Line
GoodLos Angeles County, California · 07-LA-091-R9.97-COM · Structure no. 53 2234
- Built
- 1974
- 51 years old
- Condition
- Good
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 181 ft
- 3 main spans
- Daily traffic
- 206,000
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 91 over UP RR Mta Blue Line is a concrete continuous box beam or girders - multiple carrying State Route 91 over UP RR Mta Blue Line in Los Angeles County, California. It was built in 1974, so it is 51 years old, younger than the California average of 54.8 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 206,000 vehicles a day, roughly 6% of them trucks, projected to reach 207,782 by 2040. The structure is 181 ft (55.2 m) long and 160 ft wide. If it were closed, the detour would be 1.2 mi (2 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 91 over UP RR Mta Blue Line built?
It was built in 1974, making it 51 years old in 2025.
What condition is State Route 91 over UP RR Mta Blue Line 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 May 2023.
How much traffic does State Route 91 over UP RR Mta Blue Line carry?
About 206,000 vehicles per day (2015 count), of which roughly 6% are trucks.
How long is State Route 91 over UP RR Mta Blue Line?
The structure is 181 ft (55.2 m) long with a longest span of 92 ft (28 m) and a deck 160 ft wide.
Who owns State Route 91 over UP RR Mta Blue Line?
It is owned by the State Highway Agency.