US Bridges

Clark Fork Road over Middle Fk Stanislaus Riv

Fair

Tuolumne County, California · 0.7 MI NE of SR 108 · Structure no. 32C0040

Built
1940
85 years old
Condition
Fair
inspected May 2024
Type
Arch - Deck
Concrete
Length
189 ft
1 main span
Daily traffic
99
2016 count
Owner
County
County Highway Agency

About this bridge

Clark Fork Road over Middle Fk Stanislaus Riv is a concrete arch - deck carrying Clark Fork Road over Middle Fk Stanislaus Riv in Tuolumne County, California. It was built in 1940, so it is 85 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 99 vehicles a day, roughly 2% of them trucks, projected to reach 444 by 2046. The structure is 189 ft (57.6 m) long and 33 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesClark Fork Road
CrossesMiddle Fk Stanislaus Riv
Location0.7 MI NE of SR 108
RouteCounty Highway 0
CountyTuolumne County
StateCalifornia
Coordinates38.36088, -119.86979
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating27.1 US tons
Inventory rating16.4 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadUnknown
Structure length189 ft (57.6 m)
Longest span112 ft (34.1 m)
Deck width33 ft (10 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99 (2016)
Projected traffic444 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 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 Clark Fork Road over Middle Fk Stanislaus Riv built?

It was built in 1940, making it 85 years old in 2025.

What condition is Clark Fork Road over Middle Fk Stanislaus Riv 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 May 2024.

How much traffic does Clark Fork Road over Middle Fk Stanislaus Riv carry?

About 99 vehicles per day (2016 count), of which roughly 2% are trucks.

How long is Clark Fork Road over Middle Fk Stanislaus Riv?

The structure is 189 ft (57.6 m) long with a longest span of 112 ft (34.1 m) and a deck 33 ft wide.

Who owns Clark Fork Road over Middle Fk Stanislaus Riv?

It is owned by the County Highway Agency.