Interstate 80 WB over Mason Street
FairSolano County, California · 04-SOL-080-R26.46-VAC · Structure no. 23 0051L
- Built
- 1952
- 73 years old, rebuilt 1963
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 222 ft
- 4 main spans
- Daily traffic
- 70,500
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 80 WB over Mason Street is a steel continuous stringer/multi-beam or girder carrying Interstate 80 WB over Mason Street in Solano County, California. It was built in 1952 and reconstructed in 1963, so it is 73 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 70,500 vehicles a day, roughly 6% of them trucks, projected to reach 121,388 by 2046. The structure is 222 ft (67.6 m) long and 73 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 80 WB over Mason Street built?
It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1963.
What condition is Interstate 80 WB over Mason Street 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 November 2024.
How much traffic does Interstate 80 WB over Mason Street carry?
About 70,500 vehicles per day (2009 count), of which roughly 6% are trucks.
How long is Interstate 80 WB over Mason Street?
The structure is 222 ft (67.6 m) long with a longest span of 75 ft (22.9 m) and a deck 73 ft wide.
Who owns Interstate 80 WB over Mason Street?
It is owned by the State Highway Agency.