US Bridges

K20 HWY over Grasshopper Creek

Fair

Brown County, Kansas · 9.18 MI E US75 · Structure no. 999902000070501

Built
1987
38 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete Continuous
Length
103 ft
3 main spans
Daily traffic
1,212
2023 count
Owner
State
State Highway Agency

About this bridge

K20 HWY over Grasshopper Creek is a concrete continuous slab 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,212 vehicles a day, roughly 15% of them trucks, projected to reach 1,236 by 2044. The structure is 103 ft (31.5 m) long and 42 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesK20 HWY
CrossesGrasshopper Creek
Location9.18 MI E US75
RouteState Highway 20
CountyBrown County
StateKansas
Coordinates39.66722, -95.55917
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
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 geometry7: Better than 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 rating110.1 US tons
Inventory rating66 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length103 ft (31.5 m)
Longest span40 ft (12.2 m)
Deck width42 ft (12.8 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 fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. 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 103 ft (31.5 m) long with a longest span of 40 ft (12.2 m) and a deck 42 ft wide.

Who owns K20 HWY over Grasshopper Creek?

It is owned by the State Highway Agency.