US Bridges

NE Lehto RD over Salmon Creek

Fair

Clark County, Washington · 0.2SE NE Risto RD · Structure no. 080258000000000

Built
1972
53 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
40 ft
1 main span
Daily traffic
153
2022 count
Owner
County
County Highway Agency

About this bridge

NE Lehto RD over Salmon Creek is a concrete slab carrying NE Lehto RD over Salmon Creek in Clark 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 5 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 153 vehicles a day, roughly 17% of them trucks, projected to reach 500 by 2039. The structure is 40 ft (12.2 m) long and 16 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesNE Lehto RD
CrossesSalmon Creek
Location0.2SE NE Risto RD
RouteCounty Highway 53970
CountyClark County
StateWashington
Coordinates45.76658, -122.47238
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating76.8 US tons
Inventory rating59.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length40 ft (12.2 m)
Longest span39 ft (12 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic153 (2022)
Projected traffic500 by 2039
Trucks17%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$1.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was NE Lehto RD over Salmon Creek built?

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

What condition is NE Lehto RD 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 October 2024.

How much traffic does NE Lehto RD over Salmon Creek carry?

About 153 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is NE Lehto RD over Salmon Creek?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (12 m) and a deck 16 ft wide.

Who owns NE Lehto RD over Salmon Creek?

It is owned by the County Highway Agency.