US Bridges

Lyons Ferry RD over Winnett Canyon

Good

Walla Walla County, Washington · 03.993 N SR 124 · Structure no. 082774000000000

Built
1988
37 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
30 ft
1 main span
Daily traffic
254
2024 count
Owner
County
County Highway Agency

About this bridge

Lyons Ferry RD over Winnett Canyon is a concrete stringer/multi-beam or girder carrying Lyons Ferry RD over Winnett Canyon in Walla Walla County, Washington. It was built in 1988, so it is 37 years old, younger 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 254 vehicles a day, roughly 30% of them trucks, projected to reach 320 by 2046. The structure is 30 ft (9.1 m) long and 38 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

CarriesLyons Ferry RD
CrossesWinnett Canyon
Location03.993 N SR 124
RouteCounty Highway 49710
Coordinates46.33721, -118.46991
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.7 US tons
Inventory rating13.6 US tons

Structure

MaterialConcrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width38 ft (11.5 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic254 (2024)
Projected traffic320 by 2046
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed24.9 mi (40 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$1.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lyons Ferry RD over Winnett Canyon built?

It was built in 1988, making it 37 years old in 2025.

What condition is Lyons Ferry RD over Winnett Canyon 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 2024.

How much traffic does Lyons Ferry RD over Winnett Canyon carry?

About 254 vehicles per day (2024 count), of which roughly 30% are trucks.

How long is Lyons Ferry RD over Winnett Canyon?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 38 ft wide.

Who owns Lyons Ferry RD over Winnett Canyon?

It is owned by the County Highway Agency.