US Bridges

Lewis S/Kahlotus R over US 12

Fair

Franklin County, Washington · 0.7 E JCT I-182 · Structure no. 0014916A0000000

Built
1997
28 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
270 ft
2 main spans
Daily traffic
5,313
2012 count
Owner
State
State Highway Agency

About this bridge

Lewis S/Kahlotus R over US 12 is a prestressed concrete continuous stringer/multi-beam or girder carrying Lewis S/Kahlotus R over US 12 in Franklin County, Washington. It was built in 1997, so it is 28 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 5,313 vehicles a day, roughly 19% of them trucks, projected to reach 7,608 by 2036. The structure is 270 ft (82.3 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesLewis S/Kahlotus R
CrossesUS 12
Location0.7 E JCT I-182
RouteCity Street 0
CountyFranklin County
StateWashington
Coordinates46.23928, -119.05725
Functional classUrban Other Principal Arterial

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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating35.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length270 ft (82.3 m)
Longest span131 ft (39.9 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,313 (2012)
Projected traffic7,608 by 2036
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Lewis S/Kahlotus R over US 12 built?

It was built in 1997, making it 28 years old in 2025.

What condition is Lewis S/Kahlotus R over US 12 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 Lewis S/Kahlotus R over US 12 carry?

About 5,313 vehicles per day (2012 count), of which roughly 19% are trucks.

How long is Lewis S/Kahlotus R over US 12?

The structure is 270 ft (82.3 m) long with a longest span of 131 ft (39.9 m) and a deck 43 ft wide.

Who owns Lewis S/Kahlotus R over US 12?

It is owned by the State Highway Agency.