Saint Louis RD over US Highway 101 & Ncrra
FairHumboldt County, California · 01-HUM-101-87.48-ARC · Structure no. 04 0254
- Built
- 1976
- 49 years old
- Condition
- Fair
- inspected September 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 384 ft
- 4 main spans
- Daily traffic
- 2,099
- 2010 count
- Owner
- State
- State Highway Agency
About this bridge
Saint Louis RD over US Highway 101 & Ncrra is a concrete continuous box beam or girders - multiple carrying Saint Louis RD over US Highway 101 & Ncrra in Humboldt County, California. It was built in 1976, so it is 49 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 2,099 vehicles a day, roughly 5% of them trucks, projected to reach 2,180 by 2041. The structure is 384 ft (117 m) long and 52 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Saint Louis RD over US Highway 101 & Ncrra built?
It was built in 1976, making it 49 years old in 2025.
What condition is Saint Louis RD over US Highway 101 & Ncrra 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 Saint Louis RD over US Highway 101 & Ncrra carry?
About 2,099 vehicles per day (2010 count), of which roughly 5% are trucks.
How long is Saint Louis RD over US Highway 101 & Ncrra?
The structure is 384 ft (117 m) long with a longest span of 112 ft (34.1 m) and a deck 52 ft wide.
Who owns Saint Louis RD over US Highway 101 & Ncrra?
It is owned by the State Highway Agency.