State Route 91 over I 710 W91-S710 N710-W91
FairLos Angeles County, California · 07-LA-091-R11.64-LBCH · Structure no. 53 2240
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 364 ft
- 3 main spans
- Daily traffic
- 222,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 91 over I 710 W91-S710 N710-W91 is a prestressed concrete stringer/multi-beam or girder carrying State Route 91 over I 710 W91-S710 N710-W91 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 fair condition with a lowest component rating of 5 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 222,000 vehicles a day, roughly 6% of them trucks, projected to reach 243,405 by 2040. The structure is 364 ft (111 m) long and 146 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 91 over I 710 W91-S710 N710-W91 built?
It was built in 1974, making it 51 years old in 2025.
What condition is State Route 91 over I 710 W91-S710 N710-W91 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 June 2023.
How much traffic does State Route 91 over I 710 W91-S710 N710-W91 carry?
About 222,000 vehicles per day (2019 count), of which roughly 6% are trucks.
How long is State Route 91 over I 710 W91-S710 N710-W91?
The structure is 364 ft (111 m) long with a longest span of 122 ft (37.2 m) and a deck 146 ft wide.
Who owns State Route 91 over I 710 W91-S710 N710-W91?
It is owned by the State Highway Agency.