US Bridges

SR 27 over Hangman Creek

Good

Whitman County, Washington · 11.1 N JCT SR 271 · Structure no. 0011360A0000000

Built
1979
46 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
92 ft
1 main span
Daily traffic
580
2023 count
Owner
State
State Highway Agency

About this bridge

SR 27 over Hangman Creek is a prestressed concrete stringer/multi-beam or girder carrying SR 27 over Hangman Creek in Whitman County, Washington. It was built in 1979, so it is 46 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 580 vehicles a day, roughly 11% of them trucks, projected to reach 672 by 2039. The structure is 92 ft (28 m) long and 39 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSR 27
CrossesHangman Creek
Location11.1 N JCT SR 271
RouteState Highway 27
Coordinates47.21983, -117.07506
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.9 US tons
Inventory rating45 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length92 ft (28 m)
Longest span90 ft (27.4 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic580 (2023)
Projected traffic672 by 2039
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 27 over Hangman Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is SR 27 over Hangman Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does SR 27 over Hangman Creek carry?

About 580 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 27 over Hangman Creek?

The structure is 92 ft (28 m) long with a longest span of 90 ft (27.4 m) and a deck 39 ft wide.

Who owns SR 27 over Hangman Creek?

It is owned by the State Highway Agency.