State Route 91 over Pierce Ditch
GoodRiverside County, California · 08-RIV-091-10.70-RIV · Structure no. 56 0473
- Built
- 1961
- 64 years old
- Condition
- Good
- inspected April 2023
- Type
- Culvert
- Concrete
- Length
- 57 ft
- 3 main spans
- Daily traffic
- 239,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 91 over Pierce Ditch is a concrete culvert carrying State Route 91 over Pierce Ditch in Riverside County, California. It was built in 1961, so it is 64 years old, older 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 239,000 vehicles a day, roughly 10% of them trucks, projected to reach 305,800 by 2040. The structure is 57 ft (17.5 m) long. 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 91 over Pierce Ditch built?
It was built in 1961, making it 64 years old in 2025.
What condition is State Route 91 over Pierce Ditch 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 April 2023.
How much traffic does State Route 91 over Pierce Ditch carry?
About 239,000 vehicles per day (2019 count), of which roughly 10% are trucks.
How long is State Route 91 over Pierce Ditch?
The structure is 57 ft (17.5 m) long with a longest span of 19 ft (5.8 m).
Who owns State Route 91 over Pierce Ditch?
It is owned by the State Highway Agency.