US Bridges

Lightening CR RD over M. Fk. Payette

Fair

Boise County, Idaho · 8 MI North of Crouch Id · Structure no. 040206000011516

Built
1964
61 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Steel
Length
134 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Lightening CR RD over M. Fk. Payette is a steel box beam or girders - multiple carrying Lightening CR RD over M. Fk. Payette in Boise County, Idaho. It was built in 1964, so it is 61 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 134 ft (40.8 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

Open in Google Maps
CarriesLightening CR RD
CrossesM. Fk. Payette
Location8 MI North of Crouch Id
RouteFederal Lands Road 611
CountyBoise County
StateIdaho
Coordinates44.19548, -115.93444
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25.4 US tons
Inventory rating19.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadH 20
Structure length134 ft (40.8 m)
Longest span90 ft (27.4 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.5 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 closed98.2 mi (158 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 Lightening CR RD over M. Fk. Payette built?

It was built in 1964, making it 61 years old in 2025.

What condition is Lightening CR RD over M. Fk. Payette 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 September 2023.

How much traffic does Lightening CR RD over M. Fk. Payette carry?

About 50 vehicles per day (latest count).

How long is Lightening CR RD over M. Fk. Payette?

The structure is 134 ft (40.8 m) long with a longest span of 90 ft (27.4 m) and a deck 16 ft wide.

Who owns Lightening CR RD over M. Fk. Payette?

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