US Bridges

Campgrd. Access over South Fork Payette River

Fair

Boise County, Idaho · Kirkham Hot Springs Cg. · Structure no. 040205000001151

Built
1966
59 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
127 ft
3 main spans
Daily traffic
60
1990 count
Owner
Federal
U.S. Forest Service

About this bridge

Campgrd. Access over South Fork Payette River is a steel continuous stringer/multi-beam or girder carrying Campgrd. Access over South Fork Payette River in Boise County, Idaho. It was built in 1966, so it is 59 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 5 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 60 vehicles a day, projected to reach 90 by 2045. The structure is 127 ft (38.7 m) long and 15 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

Open in Google Maps
CarriesCampgrd. Access
CrossesSouth Fork Payette River
LocationKirkham Hot Springs Cg.
RouteFederal Lands Road 25GB
CountyBoise County
StateIdaho
Coordinates44.07229, -115.54176
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating27.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckWood or timber
Main spans3
Design loadH 20
Structure length127 ft (38.7 m)
Longest span58 ft (17.7 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (1990)
Projected traffic90 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 Campgrd. Access over South Fork Payette River built?

It was built in 1966, making it 59 years old in 2025.

What condition is Campgrd. Access over South Fork 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 September 2023.

How much traffic does Campgrd. Access over South Fork Payette River carry?

About 60 vehicles per day (1990 count).

How long is Campgrd. Access over South Fork Payette River?

The structure is 127 ft (38.7 m) long with a longest span of 58 ft (17.7 m) and a deck 15 ft wide.

Who owns Campgrd. Access over South Fork Payette River?

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