23rd Street over U.S. Highway 101
FairSan Francisco County, California · 04-SF-101-3.37-SF · Structure no. 34 0035
- Built
- 1953
- 72 years old
- Condition
- Fair
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 128 ft
- 1 main span
- Daily traffic
- 4,513
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
23rd Street over U.S. Highway 101 is a steel stringer/multi-beam or girder carrying 23rd Street over U.S. Highway 101 in San Francisco County, California. It was built in 1953, so it is 72 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 4,513 vehicles a day, roughly 1% of them trucks, projected to reach 7,614 by 2046. The structure is 128 ft (39 m) long and 52 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 23rd Street over U.S. Highway 101 built?
It was built in 1953, making it 72 years old in 2025.
What condition is 23rd Street over U.S. Highway 101 in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2024.
How much traffic does 23rd Street over U.S. Highway 101 carry?
About 4,513 vehicles per day (2018 count), of which roughly 1% are trucks.
How long is 23rd Street over U.S. Highway 101?
The structure is 128 ft (39 m) long with a longest span of 122 ft (37.2 m) and a deck 52 ft wide.
Who owns 23rd Street over U.S. Highway 101?
It is owned by the State Highway Agency.