US Bridges

SR 27 over Rose Creek

Good

Whitman County, Washington · 5.1 N JCT SR 270 · Structure no. 002003150000000

Built
1924
101 years old, rebuilt 1989
Condition
Good
inspected April 2024
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
2,772
2023 count
Owner
State
State Highway Agency

About this bridge

SR 27 over Rose Creek is a concrete continuous culvert carrying SR 27 over Rose Creek in Whitman County, Washington. It was built in 1924 and reconstructed in 1989, so it is 101 years old, older 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 2,772 vehicles a day, roughly 6% of them trucks, projected to reach 3,270 by 2039. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSR 27
CrossesRose Creek
Location5.1 N JCT SR 270
RouteState Highway 27
CountyWhitman County
StateWashington
Coordinates46.79572, -117.13994
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33 US tons
Inventory rating20 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length25 ft (7.6 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,772 (2023)
Projected traffic3,270 by 2039
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$428,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 27 over Rose Creek built?

It was built in 1924, making it 101 years old in 2025. It was reconstructed in 1989.

What condition is SR 27 over Rose 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 Rose Creek carry?

About 2,772 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SR 27 over Rose Creek?

The structure is 25 ft (7.6 m) long with a longest span of 9 ft (2.7 m).

Who owns SR 27 over Rose Creek?

It is owned by the State Highway Agency.