US Bridges

NE 50th Ave over Salmon Creek

FairPosted for load

Clark County, Washington · NE50AVE & Salmon Ck · Structure no. 082511000000000

Built
1960
65 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
117 ft
1 main span
Daily traffic
2,420
2022 count
Owner
County
County Highway Agency

About this bridge

NE 50th Ave over Salmon Creek is a prestressed concrete stringer/multi-beam or girder carrying NE 50th Ave over Salmon Creek in Clark 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 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. Its operating status is: posted for load restriction.

It carries about 2,420 vehicles a day, roughly 14% of them trucks, projected to reach 6,478 by 2038. The structure is 117 ft (35.6 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesNE 50th Ave
CrossesSalmon Creek
LocationNE50AVE & Salmon Ck
RouteCounty Highway 44150
CountyClark County
StateWashington
Coordinates45.72888, -122.6189
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating36.4 US tons
Inventory rating22.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 15
Structure length117 ft (35.6 m)
Longest span50 ft (15.2 m)
Deck width30 ft (9.2 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,420 (2022)
Projected traffic6,478 by 2038
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$4.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was NE 50th Ave over Salmon Creek built?

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

What condition is NE 50th Ave 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 November 2023.

How much traffic does NE 50th Ave over Salmon Creek carry?

About 2,420 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is NE 50th Ave over Salmon Creek?

The structure is 117 ft (35.6 m) long with a longest span of 50 ft (15.2 m) and a deck 30 ft wide.

Who owns NE 50th Ave over Salmon Creek?

It is owned by the County Highway Agency.