US Bridges

Pioneer RD over Los Banos Creek

Good

Merced County, California · 2.0 MI East of Volta RD · Structure no. 39C0259

Built
1965
60 years old
Condition
Good
inspected February 2025
Type
Slab
Concrete Continuous
Length
124 ft
4 main spans
Daily traffic
1,360
2000 count
Owner
County
County Highway Agency

About this bridge

Pioneer RD over Los Banos Creek is a concrete continuous slab carrying Pioneer RD over Los Banos Creek in Merced County, California. It was built in 1965, so it is 60 years old, older 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 1,360 vehicles a day, roughly 4% of them trucks, projected to reach 2,964 by 2043. The structure is 124 ft (37.8 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesPioneer RD
CrossesLos Banos Creek
Location2.0 MI East of Volta RD
RouteCounty Highway 0
Coordinates37.04209, -120.89066
Functional classUrban 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 protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.2 US tons
Inventory rating25.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length124 ft (37.8 m)
Longest span30 ft (9.1 m)
Deck width27 ft (8.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,360 (2000)
Projected traffic2,964 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 RD over Los Banos Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Pioneer RD over Los Banos Creek 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 February 2025.

How much traffic does Pioneer RD over Los Banos Creek carry?

About 1,360 vehicles per day (2000 count), of which roughly 4% are trucks.

How long is Pioneer RD over Los Banos Creek?

The structure is 124 ft (37.8 m) long with a longest span of 30 ft (9.1 m) and a deck 27 ft wide.

Who owns Pioneer RD over Los Banos Creek?

It is owned by the County Highway Agency.