US Bridges

Rs 60 170th St. over Delaware River

FairPosted for load

Brown County, Kansas · 0.4S 3.1W of Powhattan · Structure no. 000000000070004

Built
1960
65 years old
Condition
Fair
inspected January 2024
Type
Tee Beam
Prestressed Concrete
Length
82 ft
1 main span
Daily traffic
320
2014 count
Owner
County
County Highway Agency

About this bridge

Rs 60 170th St. over Delaware River is a prestressed concrete tee beam carrying Rs 60 170th St. over Delaware River in Brown County, Kansas. It was built in 1960, so it is 65 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. Its operating status is: posted for load restriction.

It carries about 320 vehicles a day, roughly 10% of them trucks, projected to reach 350 by 2044. The structure is 82 ft (25 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesRs 60 170th St.
CrossesDelaware River
Location0.4S 3.1W of Powhattan
RouteCounty Highway 60
CountyBrown County
StateKansas
Coordinates39.75416, -95.69898
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionJanuary 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18 US tons
Inventory rating18 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length82 ft (25 m)
Longest span80 ft (24.3 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic320 (2014)
Projected traffic350 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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$420,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Rs 60 170th St. over Delaware River built?

It was built in 1960, making it 65 years old in 2025.

What condition is Rs 60 170th St. over Delaware River 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 Delaware River carry?

About 320 vehicles per day (2014 count), of which roughly 10% are trucks.

How long is Rs 60 170th St. over Delaware River?

The structure is 82 ft (25 m) long with a longest span of 80 ft (24.3 m) and a deck 28 ft wide.

Who owns Rs 60 170th St. over Delaware River?

It is owned by the County Highway Agency.