US Bridges

SR 155 over Devils Creek

Fair

Grant County, Washington · 16.8 N JCT US 2 · Structure no. 0003668C0000000

Built
1949
76 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete Continuous
Length
169 ft
3 main spans
Daily traffic
942
2023 count
Owner
State
State Highway Agency

About this bridge

SR 155 over Devils Creek is a concrete continuous tee beam carrying SR 155 over Devils Creek in Grant County, Washington. It was built in 1949, so it is 76 years old, older than the Washington average of 49.8 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 942 vehicles a day, roughly 13% of them trucks, projected to reach 1,255 by 2039. The structure is 169 ft (51.4 m) long and 38 ft wide. If it were closed, the detour would be 55.9 mi (90 km).

Location

Open in Google Maps
CarriesSR 155
CrossesDevils Creek
Location16.8 N JCT US 2
RouteState Highway 155
CountyGrant County
StateWashington
Coordinates47.84496, -119.1204
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
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
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating24 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length169 ft (51.4 m)
Longest span67 ft (20.4 m)
Deck width38 ft (11.6 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic942 (2023)
Projected traffic1,255 by 2039
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed55.9 mi (90 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$2.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 155 over Devils Creek built?

It was built in 1949, making it 76 years old in 2025.

What condition is SR 155 over Devils 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 September 2023.

How much traffic does SR 155 over Devils Creek carry?

About 942 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is SR 155 over Devils Creek?

The structure is 169 ft (51.4 m) long with a longest span of 67 ft (20.4 m) and a deck 38 ft wide.

Who owns SR 155 over Devils Creek?

It is owned by the State Highway Agency.