US Bridges

Clarke Road over Dry Creek

FairPosted for load

Kittitas County, Washington · 00.23 E US 97 · Structure no. 080734000000000

Built
1960
65 years old, rebuilt 1971
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
32 ft
1 main span
Daily traffic
58
2018 count
Owner
County
County Highway Agency

About this bridge

Clarke Road over Dry Creek is a concrete stringer/multi-beam or girder carrying Clarke Road over Dry Creek in Kittitas County, Washington. It was built in 1960 and reconstructed in 1971, so it is 65 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. Its operating status is: posted for load restriction.

It carries about 58 vehicles a day, roughly 33% of them trucks, projected to reach 154 by 2038. The structure is 32 ft (9.8 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesClarke Road
CrossesDry Creek
Location00.23 E US 97
RouteCounty Highway 32011
CountyKittitas County
StateWashington
Coordinates47.0576, -120.61331
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23 US tons
Inventory rating18 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckOther
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic58 (2018)
Projected traffic154 by 2038
Trucks33%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$456,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Clarke Road over Dry Creek built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1971.

What condition is Clarke Road over Dry 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 Clarke Road over Dry Creek carry?

About 58 vehicles per day (2018 count), of which roughly 33% are trucks.

How long is Clarke Road over Dry Creek?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 30 ft wide.

Who owns Clarke Road over Dry Creek?

It is owned by the County Highway Agency.