US Bridges

SW 230th over Walnut River

FairPosted for load

Butler County, Kansas · 0.7W 2.0S of Douglass · Structure no. 000080855306461

Built
1900
125 years old
Condition
Fair
inspected January 2025
Type
Truss - Thru
Aluminum, Wrought Iron, or Cast Iron
Length
220 ft
1 main span
Daily traffic
75
2023 count
Owner
County
County Highway Agency

About this bridge

SW 230th over Walnut River is a aluminum, wrought iron, or cast iron truss - thru carrying SW 230th over Walnut River in Butler County, Kansas. It was built in 1900, so it is 125 years old, older than the Kansas average of 52.8 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 75 vehicles a day, projected to reach 75 by 2045. The structure is 220 ft (67.1 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSW 230th
CrossesWalnut River
Location0.7W 2.0S of Douglass
RouteCounty Highway 0
CountyButler County
StateKansas
Coordinates37.489, -97.02
Functional classRural 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
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment2: Basically intolerable, requiring high priority of replacement
Operating rating7.2 US tons
Inventory rating4.3 US tons

Structure

Structure typeTruss - Thru
MaterialAluminum, Wrought Iron, or Cast Iron
DeckWood or timber
Main spans1 (+2 approach)
Design loadUnknown
Structure length220 ft (67.1 m)
Longest span148 ft (45.1 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deck14 ft (4.3 m)

Traffic and service

Average daily traffic75 (2023)
Projected traffic75 by 2045
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$999,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SW 230th over Walnut River built?

It was built in 1900, making it 125 years old in 2025.

What condition is SW 230th over Walnut 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 January 2025.

How much traffic does SW 230th over Walnut River carry?

About 75 vehicles per day (2023 count).

How long is SW 230th over Walnut River?

The structure is 220 ft (67.1 m) long with a longest span of 148 ft (45.1 m) and a deck 16 ft wide.

Who owns SW 230th over Walnut River?

It is owned by the County Highway Agency.