US Bridges

160th St. over Unnamed Stream

Fair

Brown County, Kansas · 1.5S 0.2W of Powhattan · Structure no. 000070999903360

Built
1930
95 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
21 ft
1 main span
Daily traffic
50
2016 count
Owner
County
County Highway Agency

About this bridge

160th St. over Unnamed Stream is a steel stringer/multi-beam or girder carrying 160th St. over Unnamed Stream in Brown County, Kansas. It was built in 1930, so it is 95 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 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 50 vehicles a day, projected to reach 55 by 2045. The structure is 21 ft (6.5 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries160th St.
CrossesUnnamed Stream
Location1.5S 0.2W of Powhattan
RouteCounty Highway 0
CountyBrown County
StateKansas
Coordinates39.73978, -95.64107
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32.6 US tons
Inventory rating19.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length21 ft (6.5 m)
Longest span21 ft (6.4 m)
Deck width23 ft (7.1 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic50 (2016)
Projected traffic55 by 2045
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$60,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 160th St. over Unnamed Stream built?

It was built in 1930, making it 95 years old in 2025.

What condition is 160th St. over Unnamed Stream 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 2025.

How much traffic does 160th St. over Unnamed Stream carry?

About 50 vehicles per day (2016 count).

How long is 160th St. over Unnamed Stream?

The structure is 21 ft (6.5 m) long with a longest span of 21 ft (6.4 m) and a deck 23 ft wide.

Who owns 160th St. over Unnamed Stream?

It is owned by the County Highway Agency.