US Bridges

STC3906;WARREN Wgn over Fisher Creek

Fair

Valley County, Idaho · 9.0 N. Mccall · Structure no. 000000000020100

Built
1958
67 years old
Condition
Fair
inspected August 2022
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
80 ft
3 main spans
Daily traffic
550
2023 count
Owner
County
County Highway Agency

About this bridge

STC3906;WARREN Wgn over Fisher Creek is a concrete continuous stringer/multi-beam or girder carrying STC3906;WARREN Wgn over Fisher Creek in Valley County, Idaho. It was built in 1958, so it is 67 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 550 vehicles a day, roughly 2% of them trucks, projected to reach 825 by 2042. The structure is 80 ft (24.4 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSTC3906;WARREN Wgn
CrossesFisher Creek
Location9.0 N. Mccall
RouteCounty Highway 3906
CountyValley County
StateIdaho
Coordinates45.03747, -116.05831
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating26 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span50 ft (15.2 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2023)
Projected traffic825 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was STC3906;WARREN Wgn over Fisher Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is STC3906;WARREN Wgn over Fisher 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 August 2022.

How much traffic does STC3906;WARREN Wgn over Fisher Creek carry?

About 550 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is STC3906;WARREN Wgn over Fisher Creek?

The structure is 80 ft (24.4 m) long with a longest span of 50 ft (15.2 m) and a deck 29 ft wide.

Who owns STC3906;WARREN Wgn over Fisher Creek?

It is owned by the County Highway Agency.