US Bridges

State Route 152 WB over California Aqueduct

Fair

Merced County, California · 10-MER-152-14.17 · Structure no. 39 0036L

Built
1965
60 years old, rebuilt 1985
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
531 ft
4 main spans
Daily traffic
12,425
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 152 WB over California Aqueduct is a prestressed concrete continuous box beam or girders - multiple carrying State Route 152 WB over California Aqueduct in Merced County, California. It was built in 1965 and reconstructed in 1985, so it is 60 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 12,425 vehicles a day, roughly 17% of them trucks, projected to reach 14,121 by 2045. The structure is 531 ft (161.8 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesState Route 152 WB
CrossesCalifornia Aqueduct
Location10-MER-152-14.17
RouteState Highway 152
Coordinates37.05672, -120.96398
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.7 US tons
Inventory rating45.3 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4 (+5 approach)
Design loadHS 20
Structure length531 ft (161.8 m)
Longest span105 ft (32 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,425 (2009)
Projected traffic14,121 by 2045
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 152 WB over California Aqueduct built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1985.

What condition is State Route 152 WB 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 April 2023.

How much traffic does State Route 152 WB over California Aqueduct carry?

About 12,425 vehicles per day (2009 count), of which roughly 17% are trucks.

How long is State Route 152 WB over California Aqueduct?

The structure is 531 ft (161.8 m) long with a longest span of 105 ft (32 m) and a deck 40 ft wide.

Who owns State Route 152 WB over California Aqueduct?

It is owned by the State Highway Agency.