US Bridges

NW 50th over Whitewater River

Good

Butler County, Kansas · 1.2W 3.0S of Potwin · Structure no. 000080851805900

Built
1988
37 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
202 ft
3 main spans
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

NW 50th over Whitewater River is a steel continuous stringer/multi-beam or girder carrying NW 50th over Whitewater River in Butler County, Kansas. It was built in 1988, so it is 37 years old, younger than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, roughly 2% of them trucks, projected to reach 50 by 2045. The structure is 202 ft (61.6 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNW 50th
CrossesWhitewater River
Location1.2W 3.0S of Potwin
RouteCounty Highway 0
StateKansas
Coordinates37.89776, -97.04548
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.3 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length202 ft (61.6 m)
Longest span78 ft (23.8 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic50 (2023)
Projected traffic50 by 2045
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NW 50th over Whitewater River built?

It was built in 1988, making it 37 years old in 2025.

What condition is NW 50th over Whitewater River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does NW 50th over Whitewater River carry?

About 50 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is NW 50th over Whitewater River?

The structure is 202 ft (61.6 m) long with a longest span of 78 ft (23.8 m) and a deck 30 ft wide.

Who owns NW 50th over Whitewater River?

It is owned by the County Highway Agency.