US Bridges

Rs 60 170th St. over Plum Creek

FairPosted for load

Brown County, Kansas · 0.4S 5.6W of Powhattan · Structure no. 000000000070003

Built
1945
80 years old
Condition
Fair
inspected October 2024
Type
Truss - Thru
Steel
Length
92 ft
1 main span
Daily traffic
237
2016 count
Owner
County
County Highway Agency

About this bridge

Rs 60 170th St. over Plum Creek is a steel truss - thru carrying Rs 60 170th St. over Plum Creek in Brown County, Kansas. It was built in 1945, so it is 80 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 237 vehicles a day, roughly 10% of them trucks, projected to reach 260 by 2041. The structure is 92 ft (28 m) long and 20 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesRs 60 170th St.
CrossesPlum Creek
Location0.4S 5.6W of Powhattan
RouteCounty Highway 60
CountyBrown County
StateKansas
Coordinates39.75421, -95.74273
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating21.6 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length92 ft (28 m)
Longest span90 ft (27.4 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic237 (2016)
Projected traffic260 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$215,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Rs 60 170th St. over Plum Creek built?

It was built in 1945, making it 80 years old in 2025.

What condition is Rs 60 170th St. over Plum 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 October 2024.

How much traffic does Rs 60 170th St. over Plum Creek carry?

About 237 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is Rs 60 170th St. over Plum Creek?

The structure is 92 ft (28 m) long with a longest span of 90 ft (27.4 m) and a deck 20 ft wide.

Who owns Rs 60 170th St. over Plum Creek?

It is owned by the County Highway Agency.