U.S. Highway 101 over Cordilleras Creek
PoorSan Mateo County, California · 04-SM-101-7.13-RDWC · Structure no. 35 0019
- Built
- 1930
- 95 years old, rebuilt 1971
- Condition
- Poor
- inspected August 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 33 ft
- 3 main spans
- Daily traffic
- 195,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
U.S. Highway 101 over Cordilleras Creek is a concrete continuous culvert carrying U.S. Highway 101 over Cordilleras Creek in San Mateo County, California. It was built in 1930 and reconstructed in 1971, so it is 95 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 195,000 vehicles a day, roughly 5% of them trucks, projected to reach 261,291 by 2045. The structure is 33 ft (10.1 m) long. 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was U.S. Highway 101 over Cordilleras Creek built?
It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1971.
What condition is U.S. Highway 101 over Cordilleras Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.
How much traffic does U.S. Highway 101 over Cordilleras Creek carry?
About 195,000 vehicles per day (2009 count), of which roughly 5% are trucks.
How long is U.S. Highway 101 over Cordilleras Creek?
The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m).
Who owns U.S. Highway 101 over Cordilleras Creek?
It is owned by the State Highway Agency.