US Bridges

SR 124 over Winnett Canyon

Fair

Walla Walla County, Washington · 25.2 E JCT US 12 · Structure no. 0008008A0000000

Built
1966
59 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
154 ft
3 main spans
Daily traffic
1,622
2023 count
Owner
State
State Highway Agency

About this bridge

SR 124 over Winnett Canyon is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 124 over Winnett Canyon in Walla Walla County, Washington. It was built in 1966, so it is 59 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 1,622 vehicles a day, roughly 21% of them trucks, projected to reach 1,840 by 2039. The structure is 154 ft (46.9 m) long and 37 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesSR 124
CrossesWinnett Canyon
Location25.2 E JCT US 12
RouteState Highway 124
CountyWalla Walla County
StateWashington
Coordinates46.29078, -118.53539
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating76.9 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length154 ft (46.9 m)
Longest span61 ft (18.6 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,622 (2023)
Projected traffic1,840 by 2039
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed11.8 mi (19 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)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 124 over Winnett Canyon built?

It was built in 1966, making it 59 years old in 2025.

What condition is SR 124 over Winnett Canyon 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 February 2023.

How much traffic does SR 124 over Winnett Canyon carry?

About 1,622 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is SR 124 over Winnett Canyon?

The structure is 154 ft (46.9 m) long with a longest span of 61 ft (18.6 m) and a deck 37 ft wide.

Who owns SR 124 over Winnett Canyon?

It is owned by the State Highway Agency.