Sierra Drive over San Mateo Creek
GoodSan Mateo County, California · El Cerrito Ave · Structure no. 35C0203
- Built
- 1930
- 95 years old
- Condition
- Good
- inspected May 2023
- Type
- Slab
- Concrete Continuous
- Length
- 69 ft
- 3 main spans
- Daily traffic
- 1,000
- 2016 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Sierra Drive over San Mateo Creek is a concrete continuous slab carrying Sierra Drive over San Mateo Creek in San Mateo County, California. It was built in 1930, 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 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 1,000 vehicles a day, roughly 5% of them trucks, projected to reach 1,530 by 2041. The structure is 69 ft (21 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sierra Drive over San Mateo Creek built?
It was built in 1930, making it 95 years old in 2025.
What condition is Sierra Drive 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 May 2023.
How much traffic does Sierra Drive over San Mateo Creek carry?
About 1,000 vehicles per day (2016 count), of which roughly 5% are trucks.
How long is Sierra Drive over San Mateo Creek?
The structure is 69 ft (21 m) long with a longest span of 25 ft (7.6 m) and a deck 34 ft wide.
Who owns Sierra Drive over San Mateo Creek?
It is owned by the Town or Township Highway Agency.