US Bridges

Fairgrounds RD over Pataha Creek

FairPosted for load

Garfield County, Washington · .1 S JCT SR 12 · Structure no. 084428000000000

Built
1959
66 years old, rebuilt 1968
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
800
2019 count
Owner
County
County Highway Agency

About this bridge

Fairgrounds RD over Pataha Creek is a steel stringer/multi-beam or girder carrying Fairgrounds RD over Pataha Creek in Garfield County, Washington. It was built in 1959 and reconstructed in 1968, so it is 66 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 other load-capacity restriction.

It carries about 800 vehicles a day, roughly 5% of them trucks, projected to reach 880 by 2039. The structure is 32 ft (9.8 m) long and 30 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesFairgrounds RD
CrossesPataha Creek
Location.1 S JCT SR 12
RouteCounty Highway 20500
Coordinates46.47496, -117.55624
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating38.9 US tons
Inventory rating23.3 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadH 20
Structure length32 ft (9.8 m)
Longest span31 ft (9.6 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2019)
Projected traffic880 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$20,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Fairgrounds RD over Pataha Creek built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1968.

What condition is Fairgrounds RD over Pataha 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 August 2024.

How much traffic does Fairgrounds RD over Pataha Creek carry?

About 800 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Fairgrounds RD over Pataha Creek?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.6 m) and a deck 30 ft wide.

Who owns Fairgrounds RD over Pataha Creek?

It is owned by the County Highway Agency.