US Bridges

K256 HWY over Channel Cottonwd Riv

Good

Marion County, Kansas · 0.32 MI E Vine St(marion) · Structure no. 999925600570161

Built
1961
64 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
25 ft
3 main spans
Daily traffic
2,224
2023 count
Owner
State
State Highway Agency

About this bridge

K256 HWY over Channel Cottonwd Riv is a concrete culvert carrying K256 HWY over Channel Cottonwd Riv in Marion County, Kansas. It was built in 1961, so it is 64 years old, older 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 2,224 vehicles a day, roughly 8% of them trucks, projected to reach 2,269 by 2044. The structure is 25 ft (7.6 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesK256 HWY
CrossesChannel Cottonwd Riv
Location0.32 MI E Vine St(marion)
RouteState Highway 256
CountyMarion County
StateKansas
Coordinates38.34806, -97.02528
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating32 US tons
Inventory rating19 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length25 ft (7.6 m)
Longest span8 ft (2.4 m)
Deck width66 ft (20.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,224 (2023)
Projected traffic2,269 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was K256 HWY over Channel Cottonwd Riv built?

It was built in 1961, making it 64 years old in 2025.

What condition is K256 HWY over Channel Cottonwd Riv 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 October 2023.

How much traffic does K256 HWY over Channel Cottonwd Riv carry?

About 2,224 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is K256 HWY over Channel Cottonwd Riv?

The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m) and a deck 66 ft wide.

Who owns K256 HWY over Channel Cottonwd Riv?

It is owned by the State Highway Agency.