US Bridges

Sunnyside Road over White Salmon River

Fair

Klickitat County, Washington · 1.38 NE JCT SR 141 · Structure no. 081573000000000

Built
1972
53 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
105 ft
1 main span
Daily traffic
231
2023 count
Owner
County
County Highway Agency

About this bridge

Sunnyside Road over White Salmon River is a prestressed concrete stringer/multi-beam or girder carrying Sunnyside Road over White Salmon River in Klickitat County, Washington. It was built in 1972, so it is 53 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.

It carries about 231 vehicles a day, roughly 59% of them trucks, projected to reach 288 by 2045. The structure is 105 ft (32 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSunnyside Road
CrossesWhite Salmon River
Location1.38 NE JCT SR 141
RouteCounty Highway 16700
Coordinates46.0001, -121.5064
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be 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 alignment8: Equal to present desirable criteria
Operating rating16.1 US tons
Inventory rating12.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length105 ft (32 m)
Longest span90 ft (27.4 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic231 (2023)
Projected traffic288 by 2045
Trucks59%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$4.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sunnyside Road over White Salmon River built?

It was built in 1972, making it 53 years old in 2025.

What condition is Sunnyside Road over White Salmon River 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 2024.

How much traffic does Sunnyside Road over White Salmon River carry?

About 231 vehicles per day (2023 count), of which roughly 59% are trucks.

How long is Sunnyside Road over White Salmon River?

The structure is 105 ft (32 m) long with a longest span of 90 ft (27.4 m) and a deck 28 ft wide.

Who owns Sunnyside Road over White Salmon River?

It is owned by the County Highway Agency.