US Bridges

K7 HWY over Thunderbolt Creek

Good

Crawford County, Kansas · 9.97 MI N US-400 · Structure no. 999900700190851

Built
2010
15 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete
Length
45 ft
3 main spans
Daily traffic
5,181
2023 count
Owner
State
State Highway Agency

About this bridge

K7 HWY over Thunderbolt Creek is a concrete culvert carrying K7 HWY over Thunderbolt Creek in Crawford County, Kansas. It was built in 2010, so it is 15 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 5,181 vehicles a day, roughly 7% of them trucks, projected to reach 6,076 by 2044. The structure is 45 ft (13.6 m) long and 130 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesK7 HWY
CrossesThunderbolt Creek
Location9.97 MI N US-400
RouteState Highway 7
CountyCrawford County
StateKansas
Coordinates37.48056, -94.84139
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating63.6 US tons
Inventory rating48.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length45 ft (13.6 m)
Longest span14 ft (4.3 m)
Deck width130 ft (39.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,181 (2023)
Projected traffic6,076 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Thunderbolt Creek built?

It was built in 2010, making it 15 years old in 2025.

What condition is K7 HWY over Thunderbolt 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 2024.

How much traffic does K7 HWY over Thunderbolt Creek carry?

About 5,181 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is K7 HWY over Thunderbolt Creek?

The structure is 45 ft (13.6 m) long with a longest span of 14 ft (4.3 m) and a deck 130 ft wide.

Who owns K7 HWY over Thunderbolt Creek?

It is owned by the State Highway Agency.