Richmond Road over Susan River
FairLassen County, California · Just N. of Riverside Dr. · Structure no. 07C0017
- Built
- 1995
- 30 years old
- Condition
- Fair
- inspected August 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 123 ft
- 1 main span
- Daily traffic
- 3,300
- 1999 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Richmond Road over Susan River is a prestressed concrete box beam or girders - multiple carrying Richmond Road over Susan River in Lassen County, California. It was built in 1995, so it is 30 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 3,300 vehicles a day, roughly 10% of them trucks, projected to reach 3,642 by 2041. The structure is 123 ft (37.6 m) long and 63 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 | 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Richmond Road over Susan River built?
It was built in 1995, making it 30 years old in 2025.
What condition is Richmond Road over Susan River 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 August 2023.
How much traffic does Richmond Road over Susan River carry?
About 3,300 vehicles per day (1999 count), of which roughly 10% are trucks.
How long is Richmond Road over Susan River?
The structure is 123 ft (37.6 m) long with a longest span of 118 ft (36.1 m) and a deck 63 ft wide.
Who owns Richmond Road over Susan River?
It is owned by the City or Municipal Highway Agency.