US Bridges

Winding Road over Basin Creek

Poor

Fresno County, California · 11S12-21.1 · Structure no. 051552000001027

Built
1968
57 years old
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
92 ft
4 main spans
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Winding Road over Basin Creek is a steel stringer/multi-beam or girder carrying Winding Road over Basin Creek in Fresno County, California. It was built in 1968, so it is 57 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 50 vehicles a day, projected to reach 75 by 2045. The structure is 92 ft (28 m) long and 16 ft wide.

Location

Open in Google Maps
CarriesWinding Road
CrossesBasin Creek
Location11S12-21.1
RouteFederal Lands Road 11S01
CountyFresno County
StateCalifornia
Coordinates36.90893, -119.11718
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans4
Design loadHS 20
Structure length92 ft (28 m)
Longest span92 ft (28 m)
Deck width16 ft (5 m)
Roadway width16 ft (4.8 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
CrossesOther
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 Basin Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is Winding Road over Basin Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does Winding Road over Basin Creek carry?

About 50 vehicles per day (latest count).

How long is Winding Road over Basin Creek?

The structure is 92 ft (28 m) long with a longest span of 92 ft (28 m) and a deck 16 ft wide.

Who owns Winding Road over Basin Creek?

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