US Bridges

120th St. over Grasshopper Creek

Fair

Brown County, Kansas · 1.0W 1.0N of Horton · Structure no. 000071009303440

Built
1965
60 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
20
2016 count
Owner
County
County Highway Agency

About this bridge

120th St. over Grasshopper Creek is a steel stringer/multi-beam or girder carrying 120th St. over Grasshopper Creek in Brown County, Kansas. It was built in 1965, so it is 60 years old, older 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 5 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 20 vehicles a day, projected to reach 22 by 2044. The structure is 30 ft (9.1 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries120th St.
CrossesGrasshopper Creek
Location1.0W 1.0N of Horton
RouteCounty Highway 0
CountyBrown County
StateKansas
Coordinates39.68184, -95.55784
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.8 US tons
Inventory rating26 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length30 ft (9.1 m)
Longest span28 ft (8.6 m)
Deck width26 ft (7.9 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic20 (2016)
Projected traffic22 by 2044
Trucks0%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$61,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 120th St. over Grasshopper Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is 120th St. 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 January 2024.

How much traffic does 120th St. over Grasshopper Creek carry?

About 20 vehicles per day (2016 count).

How long is 120th St. over Grasshopper Creek?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.6 m) and a deck 26 ft wide.

Who owns 120th St. over Grasshopper Creek?

It is owned by the County Highway Agency.