U.S. Highway 101 over San Mateo Creek
GoodSan Mateo County, California · 04-SM-101-13.44-SM · Structure no. 35 0010
- Built
- 1928
- 97 years old, rebuilt 1952
- Condition
- Good
- inspected August 2023
- Type
- Tee Beam
- Concrete
- Length
- 73 ft
- 1 main span
- Daily traffic
- 236,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
U.S. Highway 101 over San Mateo Creek is a concrete tee beam carrying U.S. Highway 101 over San Mateo Creek in San Mateo County, California. It was built in 1928 and reconstructed in 1952, so it is 97 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 236,000 vehicles a day, roughly 4% of them trucks, projected to reach 315,865 by 2045. The structure is 73 ft (22.3 m) long and 248 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was U.S. Highway 101 over San Mateo Creek built?
It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1952.
What condition is U.S. Highway 101 over San Mateo Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.
How much traffic does U.S. Highway 101 over San Mateo Creek carry?
About 236,000 vehicles per day (2009 count), of which roughly 4% are trucks.
How long is U.S. Highway 101 over San Mateo Creek?
The structure is 73 ft (22.3 m) long with a longest span of 30 ft (9.1 m) and a deck 248 ft wide.
Who owns U.S. Highway 101 over San Mateo Creek?
It is owned by the State Highway Agency.