US Bridges

SR 155 over Lower Lewis CR

Good

Grant County, Washington · 8.8 N JCT US 2 · Structure no. 0003668A0000000

Built
1949
76 years old
Condition
Good
inspected September 2023
Type
Slab
Concrete
Length
39 ft
1 main span
Daily traffic
942
2023 count
Owner
State
State Highway Agency

About this bridge

SR 155 over Lower Lewis CR is a concrete slab carrying SR 155 over Lower Lewis CR in Grant County, Washington. It was built in 1949, so it is 76 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 942 vehicles a day, roughly 13% of them trucks, projected to reach 1,255 by 2039. The structure is 39 ft (11.9 m) long and 38 ft wide. If it were closed, the detour would be 55.9 mi (90 km).

CarriesSR 155
CrossesLower Lewis CR
Location8.8 N JCT US 2
RouteState Highway 155
Coordinates47.75336, -119.22097
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span35 ft (10.7 m)
Deck width38 ft (11.6 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic942 (2023)
Projected traffic1,255 by 2039
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed55.9 mi (90 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$667,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 155 over Lower Lewis CR built?

It was built in 1949, making it 76 years old in 2025.

What condition is SR 155 over Lower Lewis CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does SR 155 over Lower Lewis CR carry?

About 942 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is SR 155 over Lower Lewis CR?

The structure is 39 ft (11.9 m) long with a longest span of 35 ft (10.7 m) and a deck 38 ft wide.

Who owns SR 155 over Lower Lewis CR?

It is owned by the State Highway Agency.