State Route 1 over Gazos Creek
GoodSan Mateo County, California · 04-SM-001-5.73 · Structure no. 35 0051
- Built
- 1958
- 67 years old
- Condition
- Good
- inspected October 2024
- Type
- Tee Beam
- Concrete Continuous
- Length
- 104 ft
- 3 main spans
- Daily traffic
- 4,400
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 1 over Gazos Creek is a concrete continuous tee beam carrying State Route 1 over Gazos Creek in San Mateo County, California. It was built in 1958, 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 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 4,400 vehicles a day, projected to reach 6,223 by 2046. The structure is 104 ft (31.7 m) long and 43 ft wide. If it were closed, the detour would be 29.8 mi (48 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 | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 1 over Gazos Creek built?
It was built in 1958, making it 67 years old in 2025.
What condition is State Route 1 over Gazos 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 October 2024.
How much traffic does State Route 1 over Gazos Creek carry?
About 4,400 vehicles per day (2009 count).
How long is State Route 1 over Gazos Creek?
The structure is 104 ft (31.7 m) long with a longest span of 40 ft (12.2 m) and a deck 43 ft wide.
Who owns State Route 1 over Gazos Creek?
It is owned by the State Highway Agency.