First Street over State Route 29
FairNapa County, California · 04-NAP-029-11.55-NAP · Structure no. 21 0088
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 296 ft
- 2 main spans
- Daily traffic
- 23,200
- 1989 count
- Owner
- State
- State Highway Agency
About this bridge
First Street over State Route 29 is a steel continuous stringer/multi-beam or girder carrying First Street over State Route 29 in Napa 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 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 23,200 vehicles a day, roughly 3% of them trucks, projected to reach 28,007 by 2041. The structure is 296 ft (90.1 m) long and 45 ft wide. If it were closed, the detour would be 8.7 mi (14 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was First Street over State Route 29 built?
It was built in 1964, making it 61 years old in 2025.
What condition is First Street over State Route 29 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 April 2023.
How much traffic does First Street over State Route 29 carry?
About 23,200 vehicles per day (1989 count), of which roughly 3% are trucks.
How long is First Street over State Route 29?
The structure is 296 ft (90.1 m) long with a longest span of 98 ft (30 m) and a deck 45 ft wide.
Who owns First Street over State Route 29?
It is owned by the State Highway Agency.