US Bridges

NE 172nd Avenue over East Fork Lewis River

Fair

Clark County, Washington · JCT Lucia Falls RD · Structure no. 086490000000000

Built
1999
26 years old
Condition
Fair
inspected April 2023
Type
Arch - Deck
Concrete
Length
278 ft
3 main spans
Daily traffic
3,494
2017 count
Owner
County
County Highway Agency

About this bridge

NE 172nd Avenue over East Fork Lewis River is a concrete arch - deck carrying NE 172nd Avenue over East Fork Lewis River in Clark County, Washington. It was built in 1999, so it is 26 years old, younger 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 3,494 vehicles a day, roughly 14% of them trucks, projected to reach 5,700 by 2043. The structure is 278 ft (84.7 m) long and 35 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesNE 172nd Avenue
CrossesEast Fork Lewis River
LocationJCT Lucia Falls RD
RouteCounty Highway 95100
CountyClark County
StateWashington
Coordinates45.83406, -122.49432
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.9 US tons
Inventory rating33.2 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length278 ft (84.7 m)
Longest span197 ft (60 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,494 (2017)
Projected traffic5,700 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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$10.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was NE 172nd Avenue over East Fork Lewis River built?

It was built in 1999, making it 26 years old in 2025.

What condition is NE 172nd Avenue over East Fork Lewis 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 April 2023.

How much traffic does NE 172nd Avenue over East Fork Lewis River carry?

About 3,494 vehicles per day (2017 count), of which roughly 14% are trucks.

How long is NE 172nd Avenue over East Fork Lewis River?

The structure is 278 ft (84.7 m) long with a longest span of 197 ft (60 m) and a deck 35 ft wide.

Who owns NE 172nd Avenue over East Fork Lewis River?

It is owned by the County Highway Agency.