US Bridges

State Route 14 over California Aqueduct

Fair

Los Angeles County, California · 07-LA-014-R57.14 · Structure no. 53 1833

Built
1966
59 years old, rebuilt 2006
Condition
Fair
inspected February 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
249 ft
3 main spans
Daily traffic
80,000
2017 count
Owner
State
State Highway Agency

About this bridge

State Route 14 over California Aqueduct is a concrete continuous box beam or girders - multiple carrying State Route 14 over California Aqueduct in Los Angeles County, California. It was built in 1966 and reconstructed in 2006, so it is 59 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 5 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 80,000 vehicles a day, roughly 5% of them trucks, projected to reach 186,281 by 2041. The structure is 249 ft (76 m) long and 124 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesState Route 14
CrossesCalifornia Aqueduct
Location07-LA-014-R57.14
RouteState Highway 14
Coordinates34.54406, -118.12682
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.9 US tons
Inventory rating33.2 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length249 ft (76 m)
Longest span109 ft (33.2 m)
Deck width124 ft (37.8 m)
Roadway width119 ft (36.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80,000 (2017)
Projected traffic186,281 by 2041
Trucks5%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 14 over California Aqueduct built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2006.

What condition is State Route 14 over California Aqueduct 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 February 2023.

How much traffic does State Route 14 over California Aqueduct carry?

About 80,000 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is State Route 14 over California Aqueduct?

The structure is 249 ft (76 m) long with a longest span of 109 ft (33.2 m) and a deck 124 ft wide.

Who owns State Route 14 over California Aqueduct?

It is owned by the State Highway Agency.