US Bridges

K-39-HWY over Flat Rock Creek

Good

Bourbon County, Kansas · 3.08 MI E Neosho Coln · Structure no. 999903900060971

Built
2023
2 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
1,077
2023 count
Owner
State
State Highway Agency

About this bridge

K-39-HWY over Flat Rock Creek is a concrete culvert carrying K-39-HWY over Flat Rock Creek in Bourbon County, Kansas. It was built in 2023, so it is 2 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 1,077 vehicles a day, roughly 12% of them trucks, projected to reach 1,314 by 2044. The structure is 32 ft (9.8 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesK-39-HWY
CrossesFlat Rock Creek
Location3.08 MI E Neosho Coln
RouteState Highway 39
CountyBourbon County
StateKansas
Coordinates37.71778, -95.03306
Functional classRural Minor Arterial

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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHL 93
Structure length32 ft (9.8 m)
Longest span9 ft (2.7 m)
Deck width32 ft (9.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,077 (2023)
Projected traffic1,314 by 2044
Trucks12%
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 K-39-HWY over Flat Rock Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is K-39-HWY over Flat Rock Creek 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 K-39-HWY over Flat Rock Creek carry?

About 1,077 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is K-39-HWY over Flat Rock Creek?

The structure is 32 ft (9.8 m) long with a longest span of 9 ft (2.7 m) and a deck 32 ft wide.

Who owns K-39-HWY over Flat Rock Creek?

It is owned by the State Highway Agency.