US Bridges

Winding Road over NF Stanislaus River

Good

Tuolumne County, California · No Data Entered · Structure no. 051652000001037

Built
1971
54 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
103 ft
1 main span
Daily traffic
300
Owner
Federal
U.S. Forest Service

About this bridge

Winding Road over NF Stanislaus River is a steel stringer/multi-beam or girder carrying Winding Road over NF Stanislaus River in Tuolumne County, California. It was built in 1971, so it is 54 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 300 vehicles a day, roughly 1% of them trucks, projected to reach 450 by 2045. The structure is 103 ft (31.3 m) long and 29 ft wide.

CarriesWinding Road
CrossesNF Stanislaus River
LocationNo Data Entered
RouteFederal Lands Road 7N01
Coordinates38.42227, -120.046
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.1 US tons
Inventory rating21.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length103 ft (31.3 m)
Longest span98 ft (29.9 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (—)
Projected traffic450 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Winding Road over NF Stanislaus River built?

It was built in 1971, making it 54 years old in 2025.

What condition is Winding Road over NF Stanislaus River 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 2024.

How much traffic does Winding Road over NF Stanislaus River carry?

About 300 vehicles per day (latest count), of which roughly 1% are trucks.

How long is Winding Road over NF Stanislaus River?

The structure is 103 ft (31.3 m) long with a longest span of 98 ft (29.9 m) and a deck 29 ft wide.

Who owns Winding Road over NF Stanislaus River?

It is owned by the U.S. Forest Service.