US Bridges

Endictt-St JN/4230 over Little Valley Creek

Fair

Whitman County, Washington · 5.92 MI S SR 23 · Structure no. 084911000000000

Built
1959
66 years old
Condition
Fair
inspected December 2023
Type
Tee Beam
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
238
2021 count
Owner
County
County Highway Agency

About this bridge

Endictt-St JN/4230 over Little Valley Creek is a prestressed concrete tee beam carrying Endictt-St JN/4230 over Little Valley Creek in Whitman County, Washington. It was built in 1959, so it is 66 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 238 vehicles a day, roughly 25% of them trucks, projected to reach 243 by 2044. The structure is 52 ft (15.8 m) long and 28 ft wide. If it were closed, the detour would be 39.1 mi (63 km).

Location

Open in Google Maps
CarriesEndictt-St JN/4230
CrossesLittle Valley Creek
Location5.92 MI S SR 23
RouteCounty Highway 42300
CountyWhitman County
StateWashington
Coordinates47.01762, -117.59315
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating21.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 15
Structure length52 ft (15.8 m)
Longest span50 ft (15.2 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic238 (2021)
Projected traffic243 by 2044
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.1 mi (63 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 Endictt-St JN/4230 over Little Valley Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is Endictt-St JN/4230 over Little Valley 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 December 2023.

How much traffic does Endictt-St JN/4230 over Little Valley Creek carry?

About 238 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is Endictt-St JN/4230 over Little Valley Creek?

The structure is 52 ft (15.8 m) long with a longest span of 50 ft (15.2 m) and a deck 28 ft wide.

Who owns Endictt-St JN/4230 over Little Valley Creek?

It is owned by the County Highway Agency.