US Bridges

Riverton RD.8.45 over Trib. N. Fk. Ninnescah

FairPosted for load

Reno County, Kansas · 2.4W 4.0N Pretty Prairie · Structure no. 000780741005965

Built
1979
46 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
48 ft
3 main spans
Daily traffic
14
2021 count
Owner
County
County Highway Agency

About this bridge

Riverton RD.8.45 over Trib. N. Fk. Ninnescah is a wood or timber stringer/multi-beam or girder carrying Riverton RD.8.45 over Trib. N. Fk. Ninnescah in Reno County, Kansas. It was built in 1979, so it is 46 years old, younger 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 5 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 14 vehicles a day, roughly 5% of them trucks, projected to reach 15 by 2046. The structure is 48 ft (14.7 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRiverton RD.8.45
CrossesTrib. N. Fk. Ninnescah
Location2.4W 4.0N Pretty Prairie
RouteCounty Highway 0
CountyReno County
StateKansas
Coordinates37.84674, -98.0686
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.2 US tons
Inventory rating23.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadUnknown
Structure length48 ft (14.7 m)
Longest span15 ft (4.6 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic14 (2021)
Projected traffic15 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 Riverton RD.8.45 over Trib. N. Fk. Ninnescah built?

It was built in 1979, making it 46 years old in 2025.

What condition is Riverton RD.8.45 over Trib. N. 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 July 2024.

How much traffic does Riverton RD.8.45 over Trib. N. Fk. Ninnescah carry?

About 14 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Riverton RD.8.45 over Trib. N. Fk. Ninnescah?

The structure is 48 ft (14.7 m) long with a longest span of 15 ft (4.6 m) and a deck 25 ft wide.

Who owns Riverton RD.8.45 over Trib. N. Fk. Ninnescah?

It is owned by the County Highway Agency.