US Bridges

K7 HWY over Little Osage River

Good

Bourbon County, Kansas · 13.18 MI Njct US54 · Structure no. 999900700060781

Built
2004
21 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
259 ft
3 main spans
Daily traffic
123
2023 count
Owner
State
State Highway Agency

About this bridge

K7 HWY over Little Osage River is a steel continuous stringer/multi-beam or girder carrying K7 HWY over Little Osage River in Bourbon County, Kansas. It was built in 2004, so it is 21 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 123 vehicles a day, roughly 7% of them trucks, projected to reach 125 by 2044. The structure is 259 ft (78.9 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesK7 HWY
CrossesLittle Osage River
Location13.18 MI Njct US54
RouteState Highway 7
StateKansas
Coordinates38.00556, -94.82333
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 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 geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating29.3 US tons
Inventory rating22.5 US tons

Structure

MaterialSteel Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length259 ft (78.9 m)
Longest span98 ft (30 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic123 (2023)
Projected traffic125 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Little Osage River built?

It was built in 2004, making it 21 years old in 2025.

What condition is K7 HWY over Little Osage 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 2023.

How much traffic does K7 HWY over Little Osage River carry?

About 123 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is K7 HWY over Little Osage River?

The structure is 259 ft (78.9 m) long with a longest span of 98 ft (30 m) and a deck 34 ft wide.

Who owns K7 HWY over Little Osage River?

It is owned by the State Highway Agency.