US Bridges

Rs 1864-NW 20 ST over Trib. S. Fk. Ninnescah

FairPosted for load

Pratt County, Kansas · 2.0N 0.6E of Pratt · Structure no. 000000000760300

Built
1963
62 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
31 ft
3 main spans
Daily traffic
775
2021 count
Owner
County
County Highway Agency

About this bridge

Rs 1864-NW 20 ST over Trib. S. Fk. Ninnescah is a concrete culvert carrying Rs 1864-NW 20 ST over Trib. S. Fk. Ninnescah in Pratt County, Kansas. It was built in 1963, so it is 62 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 775 vehicles a day, roughly 10% of them trucks, projected to reach 930 by 2046. The structure is 31 ft (9.5 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRs 1864-NW 20 ST
CrossesTrib. S. Fk. Ninnescah
Location2.0N 0.6E of Pratt
RouteCounty Highway 1864
CountyPratt County
StateKansas
Coordinates37.67514, -98.72344
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating25 US tons
Inventory rating25 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length31 ft (9.5 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic775 (2021)
Projected traffic930 by 2046
Trucks10%
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 Rs 1864-NW 20 ST over Trib. S. Fk. Ninnescah built?

It was built in 1963, making it 62 years old in 2025.

What condition is Rs 1864-NW 20 ST over Trib. S. Fk. Ninnescah 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 November 2024.

How much traffic does Rs 1864-NW 20 ST over Trib. S. Fk. Ninnescah carry?

About 775 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Rs 1864-NW 20 ST over Trib. S. Fk. Ninnescah?

The structure is 31 ft (9.5 m) long with a longest span of 10 ft (3 m).

Who owns Rs 1864-NW 20 ST over Trib. S. Fk. Ninnescah?

It is owned by the County Highway Agency.