US Bridges

Lyons Ferry RD over Dry Hollow

Good

Walla Walla County, Washington · 7.267 N SR 124 · Structure no. 080234000000000

Built
1988
37 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
45 ft
1 main span
Daily traffic
335
2024 count
Owner
County
County Highway Agency

About this bridge

Lyons Ferry RD over Dry Hollow is a concrete stringer/multi-beam or girder carrying Lyons Ferry RD over Dry Hollow 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 335 vehicles a day, roughly 40% of them trucks, projected to reach 410 by 2046. The structure is 45 ft (13.7 m) long and 38 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

CarriesLyons Ferry RD
CrossesDry Hollow
Location7.267 N SR 124
RouteCounty Highway 49710
Coordinates46.38116, -118.4499
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 evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.8 US tons
Inventory rating32.8 US tons

Structure

MaterialConcrete
DeckOther
Main spans1
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span44 ft (13.4 m)
Deck width38 ft (11.5 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic335 (2024)
Projected traffic410 by 2046
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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$2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lyons Ferry RD over Dry Hollow built?

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

What condition is Lyons Ferry RD over Dry Hollow 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 Dry Hollow carry?

About 335 vehicles per day (2024 count), of which roughly 40% are trucks.

How long is Lyons Ferry RD over Dry Hollow?

The structure is 45 ft (13.7 m) long with a longest span of 44 ft (13.4 m) and a deck 38 ft wide.

Who owns Lyons Ferry RD over Dry Hollow?

It is owned by the County Highway Agency.