US Bridges

Crabb Road over Hangman Creek

PoorPosted for load

Benewah County, Idaho · 2.0 N. 4.2 W. Tensed · Structure no. 000000000030075

Built
1981
44 years old
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
56 ft
1 main span
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

Crabb Road over Hangman Creek is a steel stringer/multi-beam or girder carrying Crabb Road over Hangman Creek in Benewah County, Idaho. It was built in 1981, so it is 44 years old, younger than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 30 vehicles a day, roughly 50% of them trucks, projected to reach 45 by 2042. The structure is 56 ft (17 m) long and 24 ft wide. If it were closed, the detour would be 100 mi (161 km).

CarriesCrabb Road
CrossesHangman Creek
Location2.0 N. 4.2 W. Tensed
RouteCounty Highway 0
StateIdaho
Coordinates47.18992, -117.01828
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating34.7 US tons
Inventory rating24.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length56 ft (17 m)
Longest span46 ft (14 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic45 by 2042
Trucks50%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$468,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Crabb Road over Hangman Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Crabb Road over Hangman Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does Crabb Road over Hangman Creek carry?

About 30 vehicles per day (2023 count), of which roughly 50% are trucks.

How long is Crabb Road over Hangman Creek?

The structure is 56 ft (17 m) long with a longest span of 46 ft (14 m) and a deck 24 ft wide.

Who owns Crabb Road over Hangman Creek?

It is owned by the County Highway Agency.