US Bridges

Kanza Rd. over Trib. S. Cottonwood Riv.

FairPosted for load

Marion County, Kansas · 0.5S 2.0E of Hillsboro · Structure no. 000000000570810

Built
1949
76 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
470
2020 count
Owner
County
County Highway Agency

About this bridge

Kanza Rd. over Trib. S. Cottonwood Riv. is a concrete culvert carrying Kanza Rd. over Trib. S. Cottonwood Riv. in Marion County, Kansas. It was built in 1949, so it is 76 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 6 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 470 vehicles a day, roughly 5% of them trucks, projected to reach 516 by 2045. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesKanza Rd.
CrossesTrib. S. Cottonwood Riv.
Location0.5S 2.0E of Hillsboro
RouteCounty Highway 1409
CountyMarion County
StateKansas
Coordinates38.34114, -97.16922
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating15 US tons
Inventory rating15 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic470 (2020)
Projected traffic516 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Kanza Rd. over Trib. S. Cottonwood Riv. built?

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

What condition is Kanza Rd. over Trib. S. Cottonwood Riv. 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 Kanza Rd. over Trib. S. Cottonwood Riv. carry?

About 470 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Kanza Rd. over Trib. S. Cottonwood Riv.?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns Kanza Rd. over Trib. S. Cottonwood Riv.?

It is owned by the County Highway Agency.