US Bridges

Whiteside RD.9.75 over N. Fork Ninnescah River

Fair

Reno County, Kansas · 5.3N of Pretty Prairie · Structure no. 000000000780720

Built
1950
75 years old, rebuilt 1992
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
463 ft
10 main spans
Daily traffic
238
2021 count
Owner
County
County Highway Agency

About this bridge

Whiteside RD.9.75 over N. Fork Ninnescah River is a steel continuous stringer/multi-beam or girder carrying Whiteside RD.9.75 over N. Fork Ninnescah River in Reno County, Kansas. It was built in 1950 and reconstructed in 1992, so it is 75 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.

It carries about 238 vehicles a day, roughly 10% of them trucks, projected to reach 290 by 2046. The structure is 463 ft (141 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesWhiteside RD.9.75
CrossesN. Fork Ninnescah River
Location5.3N of Pretty Prairie
RouteCounty Highway 561
CountyReno County
StateKansas
Coordinates37.86293, -98.01367
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.9 US tons
Inventory rating24.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length463 ft (141 m)
Longest span50 ft (15.2 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 traffic238 (2021)
Projected traffic290 by 2046
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Whiteside RD.9.75 over N. Fork Ninnescah River built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1992.

What condition is Whiteside RD.9.75 over N. Fork Ninnescah 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 July 2024.

How much traffic does Whiteside RD.9.75 over N. Fork Ninnescah River carry?

About 238 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Whiteside RD.9.75 over N. Fork Ninnescah River?

The structure is 463 ft (141 m) long with a longest span of 50 ft (15.2 m) and a deck 28 ft wide.

Who owns Whiteside RD.9.75 over N. Fork Ninnescah River?

It is owned by the County Highway Agency.