US Bridges

Smith Springs RD over Dry Hollow

PoorPosted for load

Walla Walla County, Washington · 17.20 N SR 124 · Structure no. 083172000000000

Built
1926
99 years old
Condition
Poor
inspected September 2024
Type
Tee Beam
Concrete
Length
26 ft
1 main span
Daily traffic
24
2024 count
Owner
County
County Highway Agency

About this bridge

Smith Springs RD over Dry Hollow is a concrete tee beam carrying Smith Springs RD over Dry Hollow in Walla Walla County, Washington. It was built in 1926, so it is 99 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 24 vehicles a day, roughly 10% of them trucks, projected to reach 30 by 2046. The structure is 26 ft (7.9 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesSmith Springs RD
CrossesDry Hollow
Location17.20 N SR 124
RouteCounty Highway 94250
Coordinates46.4136, -118.40674
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32.2 US tons
Inventory rating25 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2024)
Projected traffic30 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Smith Springs RD over Dry Hollow built?

It was built in 1926, making it 99 years old in 2025.

What condition is Smith Springs RD over Dry Hollow in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Smith Springs RD over Dry Hollow carry?

About 24 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Smith Springs RD over Dry Hollow?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 27 ft wide.

Who owns Smith Springs RD over Dry Hollow?

It is owned by the County Highway Agency.