Treasure Island RD over Sidehill
GoodSan Francisco County, California · Jno SHV#5/ Jso Shv #8 · Structure no. 34C0084
- Built
- 1938
- 87 years old
- Condition
- Good
- inspected April 2023
- Type
- Slab
- Concrete Continuous
- Length
- 105 ft
- 6 main spans
- Daily traffic
- 3,000
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Treasure Island RD over Sidehill is a concrete continuous slab carrying Treasure Island RD over Sidehill in San Francisco County, California. It was built in 1938, so it is 87 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 3,000 vehicles a day, roughly 3% of them trucks, projected to reach 6,000 by 2040. The structure is 105 ft (32 m) long and 17 ft wide. If it were closed, the detour would be 2.5 mi (4 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 Treasure Island RD over Sidehill built?
It was built in 1938, making it 87 years old in 2025.
What condition is Treasure Island RD over Sidehill 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 2023.
How much traffic does Treasure Island RD over Sidehill carry?
About 3,000 vehicles per day (2020 count), of which roughly 3% are trucks.
How long is Treasure Island RD over Sidehill?
The structure is 105 ft (32 m) long with a longest span of 18 ft (5.5 m) and a deck 17 ft wide.
Who owns Treasure Island RD over Sidehill?
It is owned by the County Highway Agency.