US Bridges

SR 23 over UP RR

Fair

Lincoln County, Washington · 0.6 N Whitman CO · Structure no. 0003538A0000000

Built
1949
76 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete Continuous
Length
106 ft
3 main spans
Daily traffic
409
2023 count
Owner
State
State Highway Agency

About this bridge

SR 23 over UP RR is a concrete continuous tee beam carrying SR 23 over UP RR in Lincoln County, Washington. It was built in 1949, so it is 76 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 409 vehicles a day, roughly 20% of them trucks, projected to reach 422 by 2039. The structure is 106 ft (32.3 m) long and 32 ft wide. If it were closed, the detour would be 52.2 mi (84 km).

Location

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CarriesSR 23
CrossesUP RR
Location0.6 N Whitman CO
RouteState Highway 23
CountyLincoln County
StateWashington
Coordinates47.26725, -117.93469
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.7 US tons
Inventory rating24.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length106 ft (32.3 m)
Longest span54 ft (16.5 m)
Deck width32 ft (9.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic409 (2023)
Projected traffic422 by 2039
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed52.2 mi (84 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 23 over UP RR built?

It was built in 1949, making it 76 years old in 2025.

What condition is SR 23 over UP RR 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 2023.

How much traffic does SR 23 over UP RR carry?

About 409 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is SR 23 over UP RR?

The structure is 106 ft (32.3 m) long with a longest span of 54 ft (16.5 m) and a deck 32 ft wide.

Who owns SR 23 over UP RR?

It is owned by the State Highway Agency.