US Bridges

Cottonwood Ave over California Aqueduct

Fair

San Bernardino County, California · 2.3 MI S of Main ST · Structure no. 54C0450

Built
1971
54 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
127 ft
2 main spans
Daily traffic
1,000
2018 count
Owner
Local
Other Local Agency

About this bridge

Cottonwood Ave over California Aqueduct is a prestressed concrete stringer/multi-beam or girder carrying Cottonwood Ave 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 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 1,000 vehicles a day, roughly 2% of them trucks, projected to reach 1,334 by 2044. The structure is 127 ft (38.7 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCottonwood Ave
CrossesCalifornia Aqueduct
Location2.3 MI S of Main ST
RouteCity Street 0
CountySan Bernardino County
StateCalifornia
Coordinates34.39105, -117.33802
Functional classUrban Minor Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 rating48.6 US tons
Inventory rating29.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length127 ft (38.7 m)
Longest span62 ft (18.8 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2018)
Projected traffic1,334 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byCity or Municipal 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 Cottonwood Ave over California Aqueduct built?

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

What condition is Cottonwood Ave 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 January 2024.

How much traffic does Cottonwood Ave over California Aqueduct carry?

About 1,000 vehicles per day (2018 count), of which roughly 2% are trucks.

How long is Cottonwood Ave over California Aqueduct?

The structure is 127 ft (38.7 m) long with a longest span of 62 ft (18.8 m) and a deck 33 ft wide.

Who owns Cottonwood Ave over California Aqueduct?

It is owned by the Other Local Agency and maintained by the City or Municipal Highway Agency.