US Bridges

Oasis Road over California Aqueduct

Good

San Bernardino County, California · 0.9 MI S of Palmdale RD · Structure no. 54C0501

Built
1971
54 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
97 ft
1 main span
Daily traffic
550
2021 count
Owner
Local
Other Local Agency

About this bridge

Oasis Road over California Aqueduct is a prestressed concrete stringer/multi-beam or girder carrying Oasis Road over California Aqueduct in San Bernardino County, California. It was built in 1971, so it is 54 years old, younger 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 550 vehicles a day, roughly 3% of them trucks, projected to reach 694 by 2042. The structure is 97 ft (29.6 m) long and 32 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesOasis Road
CrossesCalifornia Aqueduct
Location0.9 MI S of Palmdale RD
RouteCounty Highway 0
CountySan Bernardino County
StateCalifornia
Coordinates34.48596, -117.6433
Functional classRural Major Collector

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 inspectionSeptember 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 rating53.2 US tons
Inventory rating26.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length97 ft (29.6 m)
Longest span95 ft (29 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2021)
Projected traffic694 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byCounty 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 Oasis Road over California Aqueduct built?

It was built in 1971, making it 54 years old in 2025.

What condition is Oasis Road 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 September 2023.

How much traffic does Oasis Road over California Aqueduct carry?

About 550 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Oasis Road over California Aqueduct?

The structure is 97 ft (29.6 m) long with a longest span of 95 ft (29 m) and a deck 32 ft wide.

Who owns Oasis Road over California Aqueduct?

It is owned by the Other Local Agency and maintained by the County Highway Agency.