US Bridges

Randsburg Cutoff over Los Angeles Aqueduct

Poor

Kern County, California · 1.3 MI E of SR 58 · Structure no. 50C0059

Built
1966
59 years old
Condition
Poor
inspected November 2023
Type
Slab
Concrete
Length
43 ft
1 main span
Daily traffic
2,260
2007 count
Owner
County
County Highway Agency

About this bridge

Randsburg Cutoff over Los Angeles Aqueduct is a concrete slab carrying Randsburg Cutoff over Los Angeles Aqueduct in Kern County, California. It was built in 1966, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,260 vehicles a day, roughly 5% of them trucks, projected to reach 3,842 by 2040. The structure is 43 ft (13.1 m) long and 41 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesRandsburg Cutoff
CrossesLos Angeles Aqueduct
Location1.3 MI E of SR 58
RouteCounty Highway 0
Coordinates35.12264, -118.17958
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.2 US tons
Inventory rating46.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span39 ft (11.9 m)
Deck width41 ft (12.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,260 (2007)
Projected traffic3,842 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$272,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Randsburg Cutoff over Los Angeles Aqueduct built?

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

What condition is Randsburg Cutoff over Los Angeles Aqueduct in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2023.

How much traffic does Randsburg Cutoff over Los Angeles Aqueduct carry?

About 2,260 vehicles per day (2007 count), of which roughly 5% are trucks.

How long is Randsburg Cutoff over Los Angeles Aqueduct?

The structure is 43 ft (13.1 m) long with a longest span of 39 ft (11.9 m) and a deck 41 ft wide.

Who owns Randsburg Cutoff over Los Angeles Aqueduct?

It is owned by the County Highway Agency.