Zerker RD over Calloway Bypass Canal
GoodKern County, California · 1.8 MI N 7th Standard RD · Structure no. 50C0253
- Built
- 1961
- 64 years old
- Condition
- Good
- inspected November 2024
- Type
- Slab
- Concrete
- Length
- 30 ft
- 1 main span
- Daily traffic
- 2,650
- 2007 count
- Owner
- County
- County Highway Agency
About this bridge
Zerker RD over Calloway Bypass Canal is a concrete slab carrying Zerker RD over Calloway Bypass Canal in Kern 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 2,650 vehicles a day, roughly 5% of them trucks, projected to reach 2,173 by 2045. The structure is 30 ft (9.1 m) long and 37 ft wide. If it were closed, the detour would be 8.7 mi (14 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Zerker RD over Calloway Bypass Canal built?
It was built in 1961, making it 64 years old in 2025.
What condition is Zerker RD over Calloway Bypass 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 November 2024.
How much traffic does Zerker RD over Calloway Bypass Canal carry?
About 2,650 vehicles per day (2007 count), of which roughly 5% are trucks.
How long is Zerker RD over Calloway Bypass Canal?
The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 37 ft wide.
Who owns Zerker RD over Calloway Bypass Canal?
It is owned by the County Highway Agency.