US Bridges

Winding Road over Jawbone Creek

Good

Tuolumne County, California · No Data Entered · Structure no. 051654000001013

Built
1990
35 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
52 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Winding Road over Jawbone Creek is a wood or timber stringer/multi-beam or girder carrying Winding Road over Jawbone Creek in Tuolumne County, California. It was built in 1990, so it is 35 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 52 ft (15.9 m) long and 15 ft wide.

CarriesWinding Road
CrossesJawbone Creek
LocationNo Data Entered
RouteFederal Lands Road 3N01
Coordinates37.92928, -119.99235
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 protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to 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 rating34.3 US tons
Inventory rating26.5 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length52 ft (15.9 m)
Longest span50 ft (15.3 m)
Deck width15 ft (4.5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-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 Jawbone Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is Winding Road over Jawbone 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 Winding Road over Jawbone Creek carry?

About 50 vehicles per day (latest count).

How long is Winding Road over Jawbone Creek?

The structure is 52 ft (15.9 m) long with a longest span of 50 ft (15.3 m) and a deck 15 ft wide.

Who owns Winding Road over Jawbone Creek?

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