US Bridges

SW 50 ST over Trib. S. Fk. Ninnescah

Good

Pratt County, Kansas · 2.9E 4.0S of Cullison · Structure no. 000760653906340

Built
1987
38 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
25 ft
3 main spans
Daily traffic
25
2021 count
Owner
County
County Highway Agency

About this bridge

SW 50 ST over Trib. S. Fk. Ninnescah is a concrete culvert carrying SW 50 ST over Trib. S. Fk. Ninnescah in Pratt County, Kansas. It was built in 1987, so it is 38 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 25 vehicles a day, roughly 5% of them trucks, projected to reach 30 by 2046. The structure is 25 ft (7.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSW 50 ST
CrossesTrib. S. Fk. Ninnescah
Location2.9E 4.0S of Cullison
RouteCounty Highway 0
CountyPratt County
StateKansas
Coordinates37.57212, -98.85102
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length25 ft (7.7 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic25 (2021)
Projected traffic30 by 2046
Trucks5%
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 SW 50 ST over Trib. S. Fk. Ninnescah built?

It was built in 1987, making it 38 years old in 2025.

What condition is SW 50 ST over Trib. S. Fk. Ninnescah 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 November 2024.

How much traffic does SW 50 ST over Trib. S. Fk. Ninnescah carry?

About 25 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is SW 50 ST over Trib. S. Fk. Ninnescah?

The structure is 25 ft (7.7 m) long with a longest span of 8 ft (2.4 m).

Who owns SW 50 ST over Trib. S. Fk. Ninnescah?

It is owned by the County Highway Agency.