US Bridges

15th Street over Pataha CR

FairPosted for load

Garfield County, Washington · 0.1 E JCT US 12 · Structure no. 000000HI0000000

Built
1925
100 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
680
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

15th Street over Pataha CR is a steel stringer/multi-beam or girder carrying 15th Street over Pataha CR in Garfield County, Washington. It was built in 1925, so it is 100 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. Its operating status is: posted for load restriction.

It carries about 680 vehicles a day, roughly 5% of them trucks, projected to reach 743 by 2040. The structure is 35 ft (10.7 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries15th Street
CrossesPataha CR
Location0.1 E JCT US 12
RouteCity Street 15
Coordinates46.47234, -117.59013
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating22 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span33 ft (10 m)
Deck width32 ft (9.8 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic680 (2020)
Projected traffic743 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of relocation of road
Estimated improvement cost$1.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 15th Street over Pataha CR built?

It was built in 1925, making it 100 years old in 2025.

What condition is 15th Street over Pataha CR 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 October 2024.

How much traffic does 15th Street over Pataha CR carry?

About 680 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is 15th Street over Pataha CR?

The structure is 35 ft (10.7 m) long with a longest span of 33 ft (10 m) and a deck 32 ft wide.

Who owns 15th Street over Pataha CR?

It is owned by the City or Municipal Highway Agency.