State Route 29 SB over State RTE 121/IMOLA Ave
GoodNapa County, California · 04-NAP-029-R10.38-NAP · Structure no. 21 0086L
- Built
- 1961
- 64 years old
- Condition
- Good
- inspected April 2022
- Type
- Box Beam or Girders - Multiple
- Concrete
- Length
- 88 ft
- 1 main span
- Daily traffic
- 29,500
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 29 SB over State RTE 121/IMOLA Ave is a concrete box beam or girders - multiple carrying State Route 29 SB over State RTE 121/IMOLA Ave in Napa County, California. It was built in 1961, so it is 64 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 29,500 vehicles a day, roughly 6% of them trucks, projected to reach 38,350 by 2040. The structure is 88 ft (26.9 m) long and 45 ft wide. If it were closed, the detour would be 3.1 mi (5 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 State Route 29 SB over State RTE 121/IMOLA Ave built?
It was built in 1961, making it 64 years old in 2025.
What condition is State Route 29 SB over State RTE 121/IMOLA Ave 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 2022.
How much traffic does State Route 29 SB over State RTE 121/IMOLA Ave carry?
About 29,500 vehicles per day (2017 count), of which roughly 6% are trucks.
How long is State Route 29 SB over State RTE 121/IMOLA Ave?
The structure is 88 ft (26.9 m) long with a longest span of 88 ft (26.9 m) and a deck 45 ft wide.
Who owns State Route 29 SB over State RTE 121/IMOLA Ave?
It is owned by the State Highway Agency.