US Bridges

SR 27 over Cove Creek

Fair

Spokane County, Washington · 2.1 N Whitman CO · Structure no. 000000GP0000000

Built
1920
105 years old
Condition
Fair
inspected July 2024
Type
Arch - Deck
Concrete
Length
24 ft
1 main span
Daily traffic
866
2023 count
Owner
State
State Highway Agency

About this bridge

SR 27 over Cove Creek is a concrete arch - deck carrying SR 27 over Cove Creek in Spokane County, Washington. It was built in 1920, so it is 105 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 5 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 866 vehicles a day, roughly 11% of them trucks, projected to reach 1,056 by 2039. The structure is 24 ft (7.3 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR 27
CrossesCove Creek
Location2.1 N Whitman CO
RouteState Highway 27
CountySpokane County
StateWashington
Coordinates47.27875, -117.15317
Functional classRural Major 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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.1 US tons
Inventory rating20.4 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic866 (2023)
Projected traffic1,056 by 2039
Trucks11%
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

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$296,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 27 over Cove Creek built?

It was built in 1920, making it 105 years old in 2025.

What condition is SR 27 over Cove 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 July 2024.

How much traffic does SR 27 over Cove Creek carry?

About 866 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 27 over Cove Creek?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m) and a deck 27 ft wide.

Who owns SR 27 over Cove Creek?

It is owned by the State Highway Agency.