US Bridges

Rs 60 170th St. over Unnamed Stream

FairPosted for load

Brown County, Kansas · 1.4W of Baker · Structure no. 000000000070006

Built
1920
105 years old, rebuilt 1940
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
29 ft
2 main spans
Daily traffic
430
2016 count
Owner
County
County Highway Agency

About this bridge

Rs 60 170th St. over Unnamed Stream is a steel continuous stringer/multi-beam or girder carrying Rs 60 170th St. over Unnamed Stream in Brown County, Kansas. It was built in 1920 and reconstructed in 1940, so it is 105 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. Its operating status is: posted for load restriction.

It carries about 430 vehicles a day, roughly 10% of them trucks, projected to reach 500 by 2044. The structure is 29 ft (8.7 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesRs 60 170th St.
CrossesUnnamed Stream
Location1.4W of Baker
RouteCounty Highway 60
CountyBrown County
StateKansas
Coordinates39.75433, -95.58965
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28 US tons
Inventory rating16.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length29 ft (8.7 m)
Longest span12 ft (3.6 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic430 (2016)
Projected traffic500 by 2044
Trucks10%
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$82,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Rs 60 170th St. over Unnamed Stream built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1940.

What condition is Rs 60 170th 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 2024.

How much traffic does Rs 60 170th St. over Unnamed Stream carry?

About 430 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is Rs 60 170th St. over Unnamed Stream?

The structure is 29 ft (8.7 m) long with a longest span of 12 ft (3.6 m) and a deck 24 ft wide.

Who owns Rs 60 170th St. over Unnamed Stream?

It is owned by the County Highway Agency.