US Bridges

Sonora Road over Little John Creek

Good

Stanislaus County, California · South JCT With Milton Rd. · Structure no. 38C0024

Built
1997
28 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
220 ft
2 main spans
Daily traffic
230
2016 count
Owner
County
County Highway Agency

About this bridge

Sonora Road over Little John Creek is a prestressed concrete continuous box beam or girders - multiple carrying Sonora Road over Little John Creek in Stanislaus County, California. It was built in 1997, so it is 28 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 230 vehicles a day, roughly 23% of them trucks, projected to reach 266 by 2041. The structure is 220 ft (67.1 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSonora Road
CrossesLittle John Creek
LocationSouth JCT With Milton Rd.
RouteCounty Highway 0
Coordinates37.89181, -120.84627
Functional classRural Minor 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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length220 ft (67.1 m)
Longest span110 ft (33.5 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2016)
Projected traffic266 by 2041
Trucks23%
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sonora Road over Little John Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is Sonora Road over Little John 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 September 2023.

How much traffic does Sonora Road over Little John Creek carry?

About 230 vehicles per day (2016 count), of which roughly 23% are trucks.

How long is Sonora Road over Little John Creek?

The structure is 220 ft (67.1 m) long with a longest span of 110 ft (33.5 m) and a deck 35 ft wide.

Who owns Sonora Road over Little John Creek?

It is owned by the County Highway Agency.