US Bridges

Six Ml.-Rd.Valley over Middle Fk Payette River

FairPosted for load

Valley County, Idaho · 17 MI N. of Crouch Id · Structure no. 040206000001140

Built
1975
50 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
73 ft
2 main spans
Daily traffic
20
1990 count
Owner
Federal
U.S. Forest Service

About this bridge

Six Ml.-Rd.Valley over Middle Fk Payette River is a steel continuous stringer/multi-beam or girder carrying Six Ml.-Rd.Valley over Middle Fk Payette River in Valley County, Idaho. It was built in 1975, so it is 50 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. Its operating status is: posted for load restriction.

It carries about 20 vehicles a day, projected to reach 30 by 2045. The structure is 73 ft (22.1 m) long and 18 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

CarriesSix Ml.-Rd.Valley
CrossesMiddle Fk Payette River
Location17 MI N. of Crouch Id
RouteFederal Lands Road 670
StateIdaho
Coordinates44.30436, -115.86511
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating22.5 US tons
Inventory rating17.2 US tons

Structure

MaterialSteel Continuous
DeckWood or timber
Main spans2
Design loadHS 20
Structure length73 ft (22.1 m)
Longest span35 ft (10.8 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (1990)
Projected traffic30 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 km)
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 Six Ml.-Rd.Valley over Middle Fk Payette River built?

It was built in 1975, making it 50 years old in 2025.

What condition is Six Ml.-Rd.Valley over Middle Fk Payette River 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 2023.

How much traffic does Six Ml.-Rd.Valley over Middle Fk Payette River carry?

About 20 vehicles per day (1990 count).

How long is Six Ml.-Rd.Valley over Middle Fk Payette River?

The structure is 73 ft (22.1 m) long with a longest span of 35 ft (10.8 m) and a deck 18 ft wide.

Who owns Six Ml.-Rd.Valley over Middle Fk Payette River?

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