US Bridges

Cooperstown Road over Dry Creek

Fair

Stanislaus County, California · 0.8 MI NW LA Grange RD · Structure no. 38C0259

Built
1921
104 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
35
2007 count
Owner
County
County Highway Agency

About this bridge

Cooperstown Road over Dry Creek is a concrete continuous slab carrying Cooperstown Road over Dry Creek in Stanislaus County, California. It was built in 1921, so it is 104 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 111 by 2043. The structure is 24 ft (7.3 m) long and 22 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesCooperstown Road
CrossesDry Creek
Location0.8 MI NW LA Grange RD
RouteCounty Highway 0
CountyStanislaus County
StateCalifornia
Coordinates37.68715, -120.4806
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.
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 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating26.8 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span11 ft (3.5 m)
Deck width22 ft (6.7 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2007)
Projected traffic111 by 2043
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 built?

It was built in 1921, making it 104 years old in 2025.

What condition is Cooperstown Road over Dry Creek 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 carry?

About 35 vehicles per day (2007 count), of which roughly 26% are trucks.

How long is Cooperstown Road over Dry Creek?

The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.5 m) and a deck 22 ft wide.

Who owns Cooperstown Road over Dry Creek?

It is owned by the County Highway Agency.