State Route 128 over Conn Creek
GoodNapa County, California · 04-NAP-128-R7.41 · Structure no. 21 0115
- Built
- 2020
- 5 years old
- Condition
- Good
- inspected April 2024
- Type
- Slab
- Prestressed Concrete Continuous
- Length
- 135 ft
- 2 main spans
- Daily traffic
- 3,300
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 128 over Conn Creek is a prestressed concrete continuous slab carrying State Route 128 over Conn Creek in Napa County, California. It was built in 2020, so it is 5 years old, younger 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 3,300 vehicles a day, roughly 5% of them trucks, projected to reach 4,387 by 2044. The structure is 135 ft (41.1 m) long and 67 ft wide. If it were closed, the detour would be 7.5 mi (12 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. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 128 over Conn Creek built?
It was built in 2020, making it 5 years old in 2025.
What condition is State Route 128 over Conn Creek 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 2024.
How much traffic does State Route 128 over Conn Creek carry?
About 3,300 vehicles per day (2019 count), of which roughly 5% are trucks.
How long is State Route 128 over Conn Creek?
The structure is 135 ft (41.1 m) long with a longest span of 65 ft (19.7 m) and a deck 67 ft wide.
Who owns State Route 128 over Conn Creek?
It is owned by the State Highway Agency.