Old HWY 99 W over Sour Grass Creek
FairTehama County, California · 2.5 MI N Glenn CO Line · Structure no. 08C0122
- Built
- 1914
- 111 years old, rebuilt 1953
- Condition
- Fair
- inspected April 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 63 ft
- 3 main spans
- Daily traffic
- 1,922
- 2000 count
- Owner
- County
- County Highway Agency
About this bridge
Old HWY 99 W over Sour Grass Creek is a concrete continuous tee beam carrying Old HWY 99 W over Sour Grass Creek in Tehama County, California. It was built in 1914 and reconstructed in 1953, so it is 111 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 6 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 1,922 vehicles a day, roughly 8% of them trucks, projected to reach 2,398 by 2041. The structure is 63 ft (19.2 m) long and 40 ft wide. If it were closed, the detour would be 24.2 mi (39 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old HWY 99 W over Sour Grass Creek built?
It was built in 1914, making it 111 years old in 2025. It was reconstructed in 1953.
What condition is Old HWY 99 W over Sour Grass Creek 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 April 2023.
How much traffic does Old HWY 99 W over Sour Grass Creek carry?
About 1,922 vehicles per day (2000 count), of which roughly 8% are trucks.
How long is Old HWY 99 W over Sour Grass Creek?
The structure is 63 ft (19.2 m) long with a longest span of 20 ft (6.1 m) and a deck 40 ft wide.
Who owns Old HWY 99 W over Sour Grass Creek?
It is owned by the County Highway Agency.