Byron HWY over E Contra Costa Id Canal
GoodContra Costa County, California · 0.5 MI North of SR 4 · Structure no. 28C0127
- Built
- 1968
- 57 years old
- Condition
- Good
- inspected July 2024
- Type
- Slab
- Concrete
- Length
- 29 ft
- 1 main span
- Daily traffic
- 3,727
- 2013 count
- Owner
- County
- County Highway Agency
About this bridge
Byron HWY over E Contra Costa Id Canal is a concrete slab carrying Byron HWY over E Contra Costa Id Canal in Contra Costa County, California. It was built in 1968, so it is 57 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 3,727 vehicles a day, roughly 10% of them trucks, projected to reach 3,143 by 2046. The structure is 29 ft (8.8 m) long and 40 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Byron HWY over E Contra Costa Id Canal built?
It was built in 1968, making it 57 years old in 2025.
What condition is Byron HWY over E Contra Costa Id Canal 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 July 2024.
How much traffic does Byron HWY over E Contra Costa Id Canal carry?
About 3,727 vehicles per day (2013 count), of which roughly 10% are trucks.
How long is Byron HWY over E Contra Costa Id Canal?
The structure is 29 ft (8.8 m) long with a longest span of 27 ft (8.2 m) and a deck 40 ft wide.
Who owns Byron HWY over E Contra Costa Id Canal?
It is owned by the County Highway Agency.