Treasure Isd RD SB over Sidehill Ti RD NB
PoorSan Francisco County, California · Jno Shv #1/ Jso Shv #7A · Structure no. 34C0078
- Built
- 1964
- 61 years old
- Condition
- Poor
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 496 ft
- 15 main spans
- Daily traffic
- 1,500
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Treasure Isd RD SB over Sidehill Ti RD NB is a steel stringer/multi-beam or girder carrying Treasure Isd RD SB over Sidehill Ti RD NB in San Francisco County, California. It was built in 1964, so it is 61 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 1,500 vehicles a day, roughly 3% of them trucks, projected to reach 4,500 by 2040. The structure is 496 ft (151.3 m) long and 26 ft wide. If it were closed, the detour would be 2.5 mi (4 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Treasure Isd RD SB over Sidehill Ti RD NB built?
It was built in 1964, making it 61 years old in 2025.
What condition is Treasure Isd RD SB over Sidehill Ti RD NB in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.
How much traffic does Treasure Isd RD SB over Sidehill Ti RD NB carry?
About 1,500 vehicles per day (2020 count), of which roughly 3% are trucks.
How long is Treasure Isd RD SB over Sidehill Ti RD NB?
The structure is 496 ft (151.3 m) long with a longest span of 40 ft (12.2 m) and a deck 26 ft wide.
Who owns Treasure Isd RD SB over Sidehill Ti RD NB?
It is owned by the County Highway Agency.