US Bridges

K-47 HWY over Flat Rock Creek

Good

Neosho County, Kansas · 6.27 MI E US-59 · Structure no. 999904700670861

Built
1996
29 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete Continuous
Length
326 ft
5 main spans
Daily traffic
2,196
2023 count
Owner
State
State Highway Agency

About this bridge

K-47 HWY over Flat Rock Creek is a concrete continuous slab carrying K-47 HWY over Flat Rock Creek in Neosho County, Kansas. It was built in 1996, so it is 29 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 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 2,196 vehicles a day, roughly 15% of them trucks, projected to reach 2,575 by 2044. The structure is 326 ft (99.5 m) long and 42 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesK-47 HWY
CrossesFlat Rock Creek
Location6.27 MI E US-59
RouteState Highway 47
StateKansas
Coordinates37.51444, -95.15694
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating87 US tons
Inventory rating52 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckNot applicable
Main spans5
Design loadHS 20
Structure length326 ft (99.5 m)
Longest span72 ft (21.9 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,196 (2023)
Projected traffic2,575 by 2044
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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-47 HWY over Flat Rock Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is K-47 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 March 2024.

How much traffic does K-47 HWY over Flat Rock Creek carry?

About 2,196 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is K-47 HWY over Flat Rock Creek?

The structure is 326 ft (99.5 m) long with a longest span of 72 ft (21.9 m) and a deck 42 ft wide.

Who owns K-47 HWY over Flat Rock Creek?

It is owned by the State Highway Agency.