US Bridges

Spring ST over S Fork Palouse River

Fair

Whitman County, Washington · 0.1 N JCT SR 270 · Structure no. 085040000000000

Built
1915
110 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
80 ft
1 main span
Daily traffic
2,034
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Spring ST over S Fork Palouse River is a concrete culvert carrying Spring ST over S Fork Palouse River in Whitman County, Washington. It was built in 1915, so it is 110 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.

It carries about 2,034 vehicles a day, roughly 1% of them trucks, projected to reach 4,500 by 2042. The structure is 80 ft (24.4 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSpring ST
CrossesS Fork Palouse River
Location0.1 N JCT SR 270
RouteCity Street 3001
CountyWhitman County
StateWashington
Coordinates46.73, -117.17333
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length80 ft (24.4 m)
Longest span60 ft (18.3 m)
Deck width32 ft (9.8 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,034 (2019)
Projected traffic4,500 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Spring ST over S Fork Palouse River built?

It was built in 1915, making it 110 years old in 2025.

What condition is Spring ST over S Fork Palouse River 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 October 2024.

How much traffic does Spring ST over S Fork Palouse River carry?

About 2,034 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is Spring ST over S Fork Palouse River?

The structure is 80 ft (24.4 m) long with a longest span of 60 ft (18.3 m) and a deck 32 ft wide.

Who owns Spring ST over S Fork Palouse River?

It is owned by the City or Municipal Highway Agency.