Marine Pkwy over Belmont Slough
GoodSan Mateo County, California · East of S.H. 101 · Structure no. 35C0073
- Built
- 1968
- 57 years old
- Condition
- Good
- inspected April 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 34 ft
- 3 main spans
- Daily traffic
- 8,200
- 2010 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Marine Pkwy over Belmont Slough is a concrete continuous culvert carrying Marine Pkwy over Belmont Slough in San Mateo County, California. It was built in 1968, so it is 57 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 8,200 vehicles a day, roughly 10% of them trucks, projected to reach 10,904 by 2046. The structure is 34 ft (10.3 m) long and 234 ft wide. If it were closed, the detour would be 123.7 mi (199 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Marine Pkwy over Belmont Slough built?
It was built in 1968, making it 57 years old in 2025.
What condition is Marine Pkwy over Belmont Slough 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 April 2024.
How much traffic does Marine Pkwy over Belmont Slough carry?
About 8,200 vehicles per day (2010 count), of which roughly 10% are trucks.
How long is Marine Pkwy over Belmont Slough?
The structure is 34 ft (10.3 m) long with a longest span of 10 ft (3 m) and a deck 234 ft wide.
Who owns Marine Pkwy over Belmont Slough?
It is owned by the City or Municipal Highway Agency.