US Bridges

Interstate 5 NB over California Aqueduct

Good

Kings County, California · 06-KIN-005-14.92 · Structure no. 45 0069R

Built
1967
58 years old
Condition
Good
inspected December 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
190 ft
2 main spans
Daily traffic
14,500
2009 count
Owner
State
State Highway Agency

About this bridge

Interstate 5 NB over California Aqueduct is a concrete continuous box beam or girders - multiple carrying Interstate 5 NB over California Aqueduct in Kings County, California. It was built in 1967, so it is 58 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 14,500 vehicles a day, roughly 31% of them trucks, projected to reach 23,358 by 2042. The structure is 190 ft (57.9 m) long and 42 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesInterstate 5 NB
CrossesCalifornia Aqueduct
Location06-KIN-005-14.92
RouteInterstate 5
Coordinates35.96328, -119.94116
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.1 US tons
Inventory rating46.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length190 ft (57.9 m)
Longest span95 ft (29 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,500 (2009)
Projected traffic23,358 by 2042
Trucks31%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 Interstate 5 NB over California Aqueduct built?

It was built in 1967, making it 58 years old in 2025.

What condition is Interstate 5 NB over California Aqueduct 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 December 2024.

How much traffic does Interstate 5 NB over California Aqueduct carry?

About 14,500 vehicles per day (2009 count), of which roughly 31% are trucks.

How long is Interstate 5 NB over California Aqueduct?

The structure is 190 ft (57.9 m) long with a longest span of 95 ft (29 m) and a deck 42 ft wide.

Who owns Interstate 5 NB over California Aqueduct?

It is owned by the State Highway Agency.