US Bridges

Dalles Mtn Road over Swale Creek

Fair

Klickitat County, Washington · 1.0 S JCT CR 22000 · Structure no. 086257000000000

Built
1995
30 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
70 ft
3 main spans
Daily traffic
73
2023 count
Owner
County
County Highway Agency

About this bridge

Dalles Mtn Road over Swale Creek is a concrete continuous slab carrying Dalles Mtn Road over Swale Creek in Klickitat County, Washington. It was built in 1995, so it is 30 years old, younger 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 73 vehicles a day, roughly 51% of them trucks, projected to reach 91 by 2045. The structure is 70 ft (21.3 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesDalles Mtn Road
CrossesSwale Creek
Location1.0 S JCT CR 22000
RouteCounty Highway 21360
CountyKlickitat County
StateWashington
Coordinates45.73782, -120.90577
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
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 inspectionJuly 2023
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 geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.3 US tons
Inventory rating26.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span27 ft (8.2 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic73 (2023)
Projected traffic91 by 2045
Trucks51%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$998,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Dalles Mtn Road over Swale Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is Dalles Mtn Road over Swale 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 2023.

How much traffic does Dalles Mtn Road over Swale Creek carry?

About 73 vehicles per day (2023 count), of which roughly 51% are trucks.

How long is Dalles Mtn Road over Swale Creek?

The structure is 70 ft (21.3 m) long with a longest span of 27 ft (8.2 m) and a deck 31 ft wide.

Who owns Dalles Mtn Road over Swale Creek?

It is owned by the County Highway Agency.