US Bridges

IRR BIA RTE 24 over Little Hangman Creek

Fair

Benewah County, Idaho · 4 KM Southwest of Agency · Structure no. 00000000000P506

Built
1977
48 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
53 ft
1 main span
Daily traffic
20
2021 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 24 over Little Hangman Creek is a prestressed concrete stringer/multi-beam or girder carrying IRR BIA RTE 24 over Little Hangman Creek in Benewah County, Idaho. It was built in 1977, so it is 48 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 20 vehicles a day, roughly 35% of them trucks, projected to reach 60 by 2041. The structure is 53 ft (16.2 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesIRR BIA RTE 24
CrossesLittle Hangman Creek
Location4 KM Southwest of Agency
RouteFederal Lands Road 24
StateIdaho
Coordinates47.28714, -116.98042
Functional classRural Minor 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.9 US tons
Inventory rating27 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length53 ft (16.2 m)
Longest span52 ft (15.7 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2021)
Projected traffic60 by 2041
Trucks35%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Indian Affairs
Maintained byBureau of Indian Affairs
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IRR BIA RTE 24 over Little Hangman Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is IRR BIA RTE 24 over Little Hangman 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 June 2023.

How much traffic does IRR BIA RTE 24 over Little Hangman Creek carry?

About 20 vehicles per day (2021 count), of which roughly 35% are trucks.

How long is IRR BIA RTE 24 over Little Hangman Creek?

The structure is 53 ft (16.2 m) long with a longest span of 52 ft (15.7 m) and a deck 33 ft wide.

Who owns IRR BIA RTE 24 over Little Hangman Creek?

It is owned by the Bureau of Indian Affairs.