US Bridges

West ST over I-5

Fair

Lewis County, Washington · 0.4 N JCT SR 6 · Structure no. 0004337A0000000

Built
1953
72 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete Continuous
Length
164 ft
4 main spans
Daily traffic
2,641
2020 count
Owner
State
State Highway Agency

About this bridge

West ST over I-5 is a concrete continuous slab carrying West ST over I-5 in Lewis County, Washington. It was built in 1953, so it is 72 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 2,641 vehicles a day, roughly 2% of them trucks, projected to reach 3,557 by 2040. The structure is 164 ft (49.9 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesWest ST
CrossesI-5
Location0.4 N JCT SR 6
RouteCity Street 0
CountyLewis County
StateWashington
Coordinates46.66661, -122.98047
Functional classUrban 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.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.4 US tons
Inventory rating21.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length164 ft (49.9 m)
Longest span44 ft (13.3 m)
Deck width34 ft (10.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,641 (2020)
Projected traffic3,557 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was West ST over I-5 built?

It was built in 1953, making it 72 years old in 2025.

What condition is West ST over I-5 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 West ST over I-5 carry?

About 2,641 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is West ST over I-5?

The structure is 164 ft (49.9 m) long with a longest span of 44 ft (13.3 m) and a deck 34 ft wide.

Who owns West ST over I-5?

It is owned by the State Highway Agency.