US Bridges

US 97 over Swale Creek

Poor

Klickitat County, Washington · 5.5 N JCT SR 14 · Structure no. 0006413A0000000

Built
1960
65 years old
Condition
Poor
inspected July 2023
Type
Slab
Concrete Continuous
Length
104 ft
3 main spans
Daily traffic
6,760
2023 count
Owner
State
State Highway Agency

About this bridge

US 97 over Swale Creek is a concrete continuous slab carrying US 97 over Swale Creek in Klickitat County, Washington. It was built in 1960, 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 poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 6,760 vehicles a day, roughly 29% of them trucks, projected to reach 8,401 by 2039. The structure is 104 ft (31.7 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesUS 97
CrossesSwale Creek
Location5.5 N JCT SR 14
RouteU.S. Route 97
Coordinates45.76267, -120.82322
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
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 length104 ft (31.7 m)
Longest span37 ft (11.3 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,760 (2023)
Projected traffic8,401 by 2039
Trucks29%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

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$2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 97 over Swale Creek built?

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

What condition is US 97 over Swale Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.

How much traffic does US 97 over Swale Creek carry?

About 6,760 vehicles per day (2023 count), of which roughly 29% are trucks.

How long is US 97 over Swale Creek?

The structure is 104 ft (31.7 m) long with a longest span of 37 ft (11.3 m) and a deck 34 ft wide.

Who owns US 97 over Swale Creek?

It is owned by the State Highway Agency.