US Bridges

K7 HWY over Mill Creek Drainage

Fair

Doniphan County, Kansas · 11.30 M NW Wjct US-36/K-7 · Structure no. 999900700220151

Built
1946
79 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
22 ft
3 main spans
Daily traffic
410
2023 count
Owner
State
State Highway Agency

About this bridge

K7 HWY over Mill Creek Drainage is a concrete culvert carrying K7 HWY over Mill Creek Drainage in Doniphan County, Kansas. It was built in 1946, so it is 79 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.

It carries about 410 vehicles a day, roughly 17% of them trucks, projected to reach 435 by 2044. The structure is 22 ft (6.8 m) long and 34 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

Open in Google Maps
CarriesK7 HWY
CrossesMill Creek Drainage
Location11.30 M NW Wjct US-36/K-7
RouteState Highway 7
CountyDoniphan County
StateKansas
Coordinates39.92944, -95.2375
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating35.8 US tons
Inventory rating21.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length22 ft (6.8 m)
Longest span7 ft (2.1 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic410 (2023)
Projected traffic435 by 2044
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 K7 HWY over Mill Creek Drainage built?

It was built in 1946, making it 79 years old in 2025.

What condition is K7 HWY over Mill Creek Drainage 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 June 2023.

How much traffic does K7 HWY over Mill Creek Drainage carry?

About 410 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is K7 HWY over Mill Creek Drainage?

The structure is 22 ft (6.8 m) long with a longest span of 7 ft (2.1 m) and a deck 34 ft wide.

Who owns K7 HWY over Mill Creek Drainage?

It is owned by the State Highway Agency.