US Bridges

K20 HWY over Grasshopper Creek

Good

Brown County, Kansas · 8.40 MI E of US75 · Structure no. 999902000070491

Built
1987
38 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
1,212
2023 count
Owner
State
State Highway Agency

About this bridge

K20 HWY over Grasshopper Creek is a concrete culvert carrying K20 HWY over Grasshopper Creek in Brown County, Kansas. It was built in 1987, so it is 38 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 1,212 vehicles a day, roughly 15% of them trucks, projected to reach 1,236 by 2044. The structure is 26 ft (8 m) long and 95 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesK20 HWY
CrossesGrasshopper Creek
Location8.40 MI E of US75
RouteState Highway 20
CountyBrown County
StateKansas
Coordinates39.66722, -95.57194
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating43 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length26 ft (8 m)
Longest span10 ft (3 m)
Deck width95 ft (29.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,212 (2023)
Projected traffic1,236 by 2044
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 K20 HWY over Grasshopper Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is K20 HWY over Grasshopper 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 June 2023.

How much traffic does K20 HWY over Grasshopper Creek carry?

About 1,212 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is K20 HWY over Grasshopper Creek?

The structure is 26 ft (8 m) long with a longest span of 10 ft (3 m) and a deck 95 ft wide.

Who owns K20 HWY over Grasshopper Creek?

It is owned by the State Highway Agency.