US Bridges

NE Risto Road over Salmon Creek

Fair

Clark County, Washington · Int of NE227 Ave · Structure no. 080150000000000

Built
1941
84 years old, rebuilt 1954
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
2,946
2017 count
Owner
County
County Highway Agency

About this bridge

NE Risto Road over Salmon Creek is a prestressed concrete stringer/multi-beam or girder carrying NE Risto Road over Salmon Creek in Clark County, Washington. It was built in 1941 and reconstructed in 1954, so it is 84 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 2,946 vehicles a day, roughly 9% of them trucks, projected to reach 5,000 by 2038. The structure is 61 ft (18.6 m) long and 23 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesNE Risto Road
CrossesSalmon Creek
LocationInt of NE227 Ave
RouteCounty Highway 95450
CountyClark County
StateWashington
Coordinates45.77366, -122.44063
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating26.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length61 ft (18.6 m)
Longest span61 ft (18.6 m)
Deck width23 ft (6.9 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,946 (2017)
Projected traffic5,000 by 2038
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of relocation of road
Estimated improvement cost$2.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was NE Risto Road over Salmon Creek built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 1954.

What condition is NE Risto Road over Salmon 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 May 2023.

How much traffic does NE Risto Road over Salmon Creek carry?

About 2,946 vehicles per day (2017 count), of which roughly 9% are trucks.

How long is NE Risto Road over Salmon Creek?

The structure is 61 ft (18.6 m) long with a longest span of 61 ft (18.6 m) and a deck 23 ft wide.

Who owns NE Risto Road over Salmon Creek?

It is owned by the County Highway Agency.