SR 84 (marsh Rd) over US Highway 101
GoodSan Mateo County, California · 04-SM-084-R25.81-MLP · Structure no. 35 0066
- Built
- 1998
- 27 years old
- Condition
- Good
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 222 ft
- 2 main spans
- Daily traffic
- 27,500
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
SR 84 (marsh Rd) over US Highway 101 is a prestressed concrete continuous box beam or girders - multiple carrying SR 84 (marsh Rd) over US Highway 101 in San Mateo County, California. It was built in 1998, so it is 27 years old, younger 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 27,500 vehicles a day, roughly 3% of them trucks, projected to reach 66,829 by 2046. The structure is 222 ft (67.7 m) long and 88 ft wide. If it were closed, the detour would be 3.7 mi (6 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 84 (marsh Rd) over US Highway 101 built?
It was built in 1998, making it 27 years old in 2025.
What condition is SR 84 (marsh Rd) over US Highway 101 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 2024.
How much traffic does SR 84 (marsh Rd) over US Highway 101 carry?
About 27,500 vehicles per day (2009 count), of which roughly 3% are trucks.
How long is SR 84 (marsh Rd) over US Highway 101?
The structure is 222 ft (67.7 m) long with a longest span of 115 ft (35.1 m) and a deck 88 ft wide.
Who owns SR 84 (marsh Rd) over US Highway 101?
It is owned by the State Highway Agency.