US Bridges

Cooperstown Road over Dry Creek Tributary

Fair

Stanislaus County, California · 6.5 MI NW JCT Grange RD · Structure no. 38C0256

Built
1920
105 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
35
2017 count
Owner
County
County Highway Agency

About this bridge

Cooperstown Road over Dry Creek Tributary is a concrete continuous slab carrying Cooperstown Road over Dry Creek Tributary in Stanislaus County, California. It was built in 1920, so it is 105 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 35 vehicles a day, roughly 26% of them trucks, projected to reach 109 by 2045. The structure is 31 ft (9.4 m) long and 25 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesCooperstown Road
CrossesDry Creek Tributary
Location6.5 MI NW JCT Grange RD
RouteCounty Highway 0
CountyStanislaus County
StateCalifornia
Coordinates37.74389, -120.55025
Functional classRural Minor Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
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 alignment6: Equal to present minimum criteria
Operating rating31.7 US tons
Inventory rating24.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span15 ft (4.6 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2017)
Projected traffic109 by 2045
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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 Cooperstown Road over Dry Creek Tributary built?

It was built in 1920, making it 105 years old in 2025.

What condition is Cooperstown Road over Dry Creek Tributary 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 September 2023.

How much traffic does Cooperstown Road over Dry Creek Tributary carry?

About 35 vehicles per day (2017 count), of which roughly 26% are trucks.

How long is Cooperstown Road over Dry Creek Tributary?

The structure is 31 ft (9.4 m) long with a longest span of 15 ft (4.6 m) and a deck 25 ft wide.

Who owns Cooperstown Road over Dry Creek Tributary?

It is owned by the County Highway Agency.