US Bridges

Smith Springs RD over Whetstone Creek

FairPosted for load

Walla Walla County, Washington · 01.61 N SR 124 · Structure no. 083648000000000

Built
1973
52 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete
Length
50 ft
1 main span
Daily traffic
98
2024 count
Owner
County
County Highway Agency

About this bridge

Smith Springs RD over Whetstone Creek is a concrete tee beam carrying Smith Springs RD over Whetstone Creek in Walla Walla County, Washington. It was built in 1973, so it is 52 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. Its operating status is: posted for load restriction.

It carries about 98 vehicles a day, roughly 30% of them trucks, projected to reach 120 by 2046. The structure is 50 ft (15.2 m) long and 31 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesSmith Springs RD
CrossesWhetstone Creek
Location01.61 N SR 124
RouteCounty Highway 94250
Coordinates46.31392, -118.286
Functional classRural Major Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.6 US tons
Inventory rating22.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckOther
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span46 ft (14 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic98 (2024)
Projected traffic120 by 2046
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$2.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Smith Springs RD over Whetstone Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Smith Springs RD over Whetstone Creek 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 September 2024.

How much traffic does Smith Springs RD over Whetstone Creek carry?

About 98 vehicles per day (2024 count), of which roughly 30% are trucks.

How long is Smith Springs RD over Whetstone Creek?

The structure is 50 ft (15.2 m) long with a longest span of 46 ft (14 m) and a deck 31 ft wide.

Who owns Smith Springs RD over Whetstone Creek?

It is owned by the County Highway Agency.