US Bridges

SW 70th over Trib to Walnut River

Good

Butler County, Kansas · SW 70th/TRIB Walnut Riv · Structure no. 000080863606140

Built
2001
24 years old
Condition
Good
inspected February 2025
Type
Culvert
Concrete
Length
25 ft
3 main spans
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

SW 70th over Trib to Walnut River is a concrete culvert carrying SW 70th over Trib to Walnut River in Butler County, Kansas. It was built in 2001, so it is 24 years old, younger than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, projected to reach 50 by 2045. The structure is 25 ft (7.7 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSW 70th
CrossesTrib to Walnut River
LocationSW 70th/TRIB Walnut Riv
RouteCounty Highway 2206
CountyButler County
StateKansas
Coordinates37.72296, -96.94198
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.8 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length25 ft (7.7 m)
Longest span8 ft (2.4 m)
Deck width31 ft (9.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic50 (2023)
Projected traffic50 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SW 70th over Trib to Walnut River built?

It was built in 2001, making it 24 years old in 2025.

What condition is SW 70th over Trib to Walnut River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2025.

How much traffic does SW 70th over Trib to Walnut River carry?

About 50 vehicles per day (2023 count).

How long is SW 70th over Trib to Walnut River?

The structure is 25 ft (7.7 m) long with a longest span of 8 ft (2.4 m) and a deck 31 ft wide.

Who owns SW 70th over Trib to Walnut River?

It is owned by the County Highway Agency.