Conwell ST over San Dimas Wash
FairLos Angeles County, California · 0.1MI N/O Covina Blvd · Structure no. 53C1557
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected September 2023
- Type
- Frame
- Concrete
- Length
- 34 ft
- 1 main span
- Daily traffic
- 1,010
- 2017 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Conwell ST over San Dimas Wash is a concrete frame carrying Conwell ST over San Dimas Wash in Los Angeles County, California. It was built in 1968, so it is 57 years old, older 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 1,010 vehicles a day, roughly 2% of them trucks, projected to reach 1,111 by 2041. The structure is 34 ft (10.4 m) long and 61 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Conwell ST over San Dimas Wash built?
It was built in 1968, making it 57 years old in 2025.
What condition is Conwell ST over San Dimas Wash 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 September 2023.
How much traffic does Conwell ST over San Dimas Wash carry?
About 1,010 vehicles per day (2017 count), of which roughly 2% are trucks.
How long is Conwell ST over San Dimas Wash?
The structure is 34 ft (10.4 m) long with a longest span of 30 ft (9.1 m) and a deck 61 ft wide.
Who owns Conwell ST over San Dimas Wash?
It is owned by the City or Municipal Highway Agency.