US Bridges

State Route 46 over Calloway Canal

Fair

Kern County, California · 06-KER-046-54.89 · Structure no. 50 0026

Built
1959
66 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete Continuous
Length
115 ft
5 main spans
Daily traffic
7,700
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 46 over Calloway Canal is a concrete continuous slab carrying State Route 46 over Calloway Canal in Kern County, California. It was built in 1959, so it is 66 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 6 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 7,700 vehicles a day, roughly 40% of them trucks, projected to reach 13,976 by 2042. The structure is 115 ft (35.1 m) long and 43 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesState Route 46
CrossesCalloway Canal
Location06-KER-046-54.89
RouteState Highway 46
CountyKern County
StateCalifornia
Coordinates35.60175, -119.26281
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.6 US tons
Inventory rating41.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length115 ft (35.1 m)
Longest span26 ft (7.9 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,700 (2009)
Projected traffic13,976 by 2042
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 46 over Calloway Canal built?

It was built in 1959, making it 66 years old in 2025.

What condition is State Route 46 over Calloway Canal 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 2024.

How much traffic does State Route 46 over Calloway Canal carry?

About 7,700 vehicles per day (2009 count), of which roughly 40% are trucks.

How long is State Route 46 over Calloway Canal?

The structure is 115 ft (35.1 m) long with a longest span of 26 ft (7.9 m) and a deck 43 ft wide.

Who owns State Route 46 over Calloway Canal?

It is owned by the State Highway Agency.