US Bridges

Pioneer Avenue over S San Joaquin Main Canal

Fair

Stanislaus County, California · 0.1 MI N Pleasant Valy RD · Structure no. 38C0263

Built
1928
97 years old
Condition
Fair
inspected January 2025
Type
Tee Beam
Concrete Continuous
Length
51 ft
3 main spans
Daily traffic
445
2019 count
Owner
County
County Highway Agency

About this bridge

Pioneer Avenue over S San Joaquin Main Canal is a concrete continuous tee beam carrying Pioneer Avenue over S San Joaquin Main Canal in Stanislaus County, California. It was built in 1928, so it is 97 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 445 vehicles a day, roughly 33% of them trucks, projected to reach 510 by 2047. The structure is 51 ft (15.5 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesPioneer Avenue
CrossesS San Joaquin Main Canal
Location0.1 MI N Pleasant Valy RD
RouteCounty Highway 0
CountyStanislaus County
StateCalifornia
Coordinates37.80737, -120.91426
Functional classRural Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length51 ft (15.5 m)
Longest span16 ft (5 m)
Deck width22 ft (6.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic445 (2019)
Projected traffic510 by 2047
Trucks33%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Pioneer Avenue over S San Joaquin Main Canal built?

It was built in 1928, making it 97 years old in 2025.

What condition is Pioneer Avenue over S San Joaquin Main Canal 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 Pioneer Avenue over S San Joaquin Main Canal carry?

About 445 vehicles per day (2019 count), of which roughly 33% are trucks.

How long is Pioneer Avenue over S San Joaquin Main Canal?

The structure is 51 ft (15.5 m) long with a longest span of 16 ft (5 m) and a deck 22 ft wide.

Who owns Pioneer Avenue over S San Joaquin Main Canal?

It is owned by the County Highway Agency.