US Bridges

K7 HWY over Mill Creek

Fair

Bourbon County, Kansas · 1.16 MI N-Jct US54 · Structure no. 999900700060311

Built
1961
64 years old
Condition
Fair
inspected February 2023
Type
Tee Beam
Concrete Continuous
Length
240 ft
3 main spans
Daily traffic
559
2023 count
Owner
State
State Highway Agency

About this bridge

K7 HWY over Mill Creek is a concrete continuous tee beam carrying K7 HWY over Mill Creek in Bourbon 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 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 559 vehicles a day, roughly 3% of them trucks, projected to reach 570 by 2044. The structure is 240 ft (73.3 m) long and 33 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesK7 HWY
CrossesMill Creek
Location1.16 MI N-Jct US54
RouteState Highway 7
CountyBourbon County
StateKansas
Coordinates37.88, -94.76889
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating56.9 US tons
Inventory rating34.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length240 ft (73.3 m)
Longest span98 ft (29.9 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic559 (2023)
Projected traffic570 by 2044
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 built?

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

What condition is K7 HWY over Mill Creek 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 February 2023.

How much traffic does K7 HWY over Mill Creek carry?

About 559 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is K7 HWY over Mill Creek?

The structure is 240 ft (73.3 m) long with a longest span of 98 ft (29.9 m) and a deck 33 ft wide.

Who owns K7 HWY over Mill Creek?

It is owned by the State Highway Agency.