U.S. Highway 101 over Redwood Creek
FairSan Mateo County, California · 04-SM-101-6.20-RDWC · Structure no. 35 0145
- Built
- 1958
- 67 years old, rebuilt 1972
- Condition
- Fair
- inspected August 2023
- Type
- Slab
- Concrete Continuous
- Length
- 374 ft
- 11 main spans
- Daily traffic
- 195,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
U.S. Highway 101 over Redwood Creek is a concrete continuous slab carrying U.S. Highway 101 over Redwood Creek in San Mateo County, California. It was built in 1958 and reconstructed in 1972, so it is 67 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 195,000 vehicles a day, roughly 5% of them trucks, projected to reach 261,291 by 2045. The structure is 374 ft (114 m) long and 164 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was U.S. Highway 101 over Redwood Creek built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1972.
What condition is U.S. Highway 101 over Redwood 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 August 2023.
How much traffic does U.S. Highway 101 over Redwood Creek carry?
About 195,000 vehicles per day (2009 count), of which roughly 5% are trucks.
How long is U.S. Highway 101 over Redwood Creek?
The structure is 374 ft (114 m) long with a longest span of 34 ft (10.4 m) and a deck 164 ft wide.
Who owns U.S. Highway 101 over Redwood Creek?
It is owned by the State Highway Agency.