US Bridges

SR 33 (derrick Av) over California Aqueduct

Fair

Fresno County, California · 06-FRE-033-46.78 · Structure no. 42 0272

Built
1967
58 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
252 ft
3 main spans
Daily traffic
1,700
2009 count
Owner
State
State Highway Agency

About this bridge

SR 33 (derrick Av) over California Aqueduct is a prestressed concrete stringer/multi-beam or girder carrying SR 33 (derrick Av) over California Aqueduct in Fresno County, California. It was built in 1967, so it is 58 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 1,700 vehicles a day, roughly 18% of them trucks, projected to reach 2,819 by 2043. The structure is 252 ft (76.8 m) long and 34 ft wide. If it were closed, the detour would be 52.2 mi (84 km).

Location

Open in Google Maps
CarriesSR 33 (derrick Av)
CrossesCalifornia Aqueduct
Location06-FRE-033-46.78
RouteState Highway 33
CountyFresno County
StateCalifornia
Coordinates36.53596, -120.38896
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating29.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length252 ft (76.8 m)
Longest span80 ft (24.4 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2009)
Projected traffic2,819 by 2043
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed52.2 mi (84 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 33 (derrick Av) over California Aqueduct built?

It was built in 1967, making it 58 years old in 2025.

What condition is SR 33 (derrick Av) 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 2025.

How much traffic does SR 33 (derrick Av) over California Aqueduct carry?

About 1,700 vehicles per day (2009 count), of which roughly 18% are trucks.

How long is SR 33 (derrick Av) over California Aqueduct?

The structure is 252 ft (76.8 m) long with a longest span of 80 ft (24.4 m) and a deck 34 ft wide.

Who owns SR 33 (derrick Av) over California Aqueduct?

It is owned by the State Highway Agency.