US Bridges

NW 40th Street over Trib. W. Br. Walnut Riv.

PoorPosted for load

Butler County, Kansas · 1.0W 4.5N of Eldorado · Structure no. 000080871505920

Built
1952
73 years old
Condition
Poor
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
37 ft
1 main span
Daily traffic
150
2023 count
Owner
County
County Highway Agency

About this bridge

NW 40th Street over Trib. W. Br. Walnut Riv. is a steel stringer/multi-beam or girder carrying NW 40th Street over Trib. W. Br. Walnut Riv. in Butler County, Kansas. It was built in 1952, so it is 73 years old, older than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 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 150 vehicles a day, roughly 1% of them trucks, projected to reach 150 by 2045. The structure is 37 ft (11.3 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesNW 40th Street
CrossesTrib. W. Br. Walnut Riv.
Location1.0W 4.5N of Eldorado
RouteCounty Highway 0
CountyButler County
StateKansas
Coordinates37.88267, -96.86759
Functional classRural Minor 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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2025
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18.7 US tons
Inventory rating11.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length37 ft (11.3 m)
Longest span35 ft (10.6 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic150 (2023)
Projected traffic150 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$150,000
NavigationNo navigation control on waterway

Frequently asked questions

When was NW 40th Street over Trib. W. Br. Walnut Riv. built?

It was built in 1952, making it 73 years old in 2025.

What condition is NW 40th Street over Trib. W. Br. Walnut Riv. 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 February 2025.

How much traffic does NW 40th Street over Trib. W. Br. Walnut Riv. carry?

About 150 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is NW 40th Street over Trib. W. Br. Walnut Riv.?

The structure is 37 ft (11.3 m) long with a longest span of 35 ft (10.6 m) and a deck 27 ft wide.

Who owns NW 40th Street over Trib. W. Br. Walnut Riv.?

It is owned by the County Highway Agency.