US Highway 101 NB over Bayshore Blvd Viaduct
GoodSan Francisco County, California · 04-SF-101-1.14-SF · Structure no. 34 0104
- Built
- 1970
- 55 years old
- Condition
- Good
- inspected January 2024
- Type
- Slab
- Concrete Continuous
- Length
- 645 ft
- 22 main spans
- Daily traffic
- 195,400
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
US Highway 101 NB over Bayshore Blvd Viaduct is a concrete continuous slab carrying US Highway 101 NB over Bayshore Blvd Viaduct in San Francisco County, California. It was built in 1970, so it is 55 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 195,400 vehicles a day, roughly 5% of them trucks, projected to reach 235,260 by 2046. The structure is 645 ft (196.6 m) long and 22 ft wide.
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 US Highway 101 NB over Bayshore Blvd Viaduct built?
It was built in 1970, making it 55 years old in 2025.
What condition is US Highway 101 NB over Bayshore Blvd Viaduct 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 January 2024.
How much traffic does US Highway 101 NB over Bayshore Blvd Viaduct carry?
About 195,400 vehicles per day (2019 count), of which roughly 5% are trucks.
How long is US Highway 101 NB over Bayshore Blvd Viaduct?
The structure is 645 ft (196.6 m) long with a longest span of 30 ft (9.1 m) and a deck 22 ft wide.
Who owns US Highway 101 NB over Bayshore Blvd Viaduct?
It is owned by the State Highway Agency.