US Bridges

Ferris RD over Spring Valley

Good

Walla Walla County, Washington · 1.2 E Lwr Waitsburg · Structure no. 086029000000000

Built
1993
32 years old
Condition
Good
inspected September 2023
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
60
2020 count
Owner
County
County Highway Agency

About this bridge

Ferris RD over Spring Valley is a concrete slab carrying Ferris RD over Spring Valley in Walla Walla County, Washington. It was built in 1993, so it is 32 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 60 vehicles a day, roughly 29% of them trucks, projected to reach 66 by 2040. The structure is 26 ft (7.8 m) long and 32 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesFerris RD
CrossesSpring Valley
Location1.2 E Lwr Waitsburg
RouteCounty Highway 66940
Coordinates46.19783, -118.24428
Functional classRural Minor 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.6 US tons
Inventory rating29.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length26 ft (7.8 m)
Longest span25 ft (7.5 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2020)
Projected traffic66 by 2040
Trucks29%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ferris RD over Spring Valley built?

It was built in 1993, making it 32 years old in 2025.

What condition is Ferris RD over Spring Valley 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 Ferris RD over Spring Valley carry?

About 60 vehicles per day (2020 count), of which roughly 29% are trucks.

How long is Ferris RD over Spring Valley?

The structure is 26 ft (7.8 m) long with a longest span of 25 ft (7.5 m) and a deck 32 ft wide.

Who owns Ferris RD over Spring Valley?

It is owned by the County Highway Agency.