US Bridges

Sunnyside Road over White Salmon River

Good

Klickitat County, Washington · 2.44 E JCT SR 141 · Structure no. 084230000000000

Built
1972
53 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
67 ft
1 main span
Daily traffic
462
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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 462 vehicles a day, roughly 45% of them trucks, projected to reach 575 by 2045. The structure is 67 ft (20.4 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesSunnyside Road
CrossesWhite Salmon River
Location2.44 E JCT SR 141
RouteCounty Highway 16700
Coordinates45.96405, -121.46949
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59 US tons
Inventory rating34.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length67 ft (20.4 m)
Longest span62 ft (18.9 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic462 (2023)
Projected traffic575 by 2045
Trucks45%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.8 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 good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

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

About 462 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is Sunnyside Road over White Salmon River?

The structure is 67 ft (20.4 m) long with a longest span of 62 ft (18.9 m) and a deck 28 ft wide.

Who owns Sunnyside Road over White Salmon River?

It is owned by the County Highway Agency.