US Bridges

NW 70 Ave. M.0-7.5 over S. Fork Ninnescah River

FairPosted for load

Kingman County, Kansas · 7.0W of Kingman · Structure no. 000480721006245

Built
1971
54 years old, rebuilt 2021
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
324 ft
9 main spans
Daily traffic
10
2021 count
Owner
County
County Highway Agency

About this bridge

NW 70 Ave. M.0-7.5 over S. Fork Ninnescah River is a steel continuous stringer/multi-beam or girder carrying NW 70 Ave. M.0-7.5 over S. Fork Ninnescah River in Kingman County, Kansas. It was built in 1971 and reconstructed in 2021, so it is 54 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 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 10 vehicles a day, roughly 5% of them trucks, projected to reach 12 by 2043. The structure is 324 ft (98.9 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNW 70 Ave. M.0-7.5
CrossesS. Fork Ninnescah River
Location7.0W of Kingman
RouteCounty Highway 0
StateKansas
Coordinates37.63736, -98.24594
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating45.6 US tons
Inventory rating27.3 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHS 15
Structure length324 ft (98.9 m)
Longest span38 ft (11.5 m)
Deck width27 ft (8.2 m)
Roadway width26 ft (8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic10 (2021)
Projected traffic12 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NW 70 Ave. M.0-7.5 over S. Fork Ninnescah River built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2021.

What condition is NW 70 Ave. M.0-7.5 over S. 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 January 2023.

How much traffic does NW 70 Ave. M.0-7.5 over S. Fork Ninnescah River carry?

About 10 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is NW 70 Ave. M.0-7.5 over S. Fork Ninnescah River?

The structure is 324 ft (98.9 m) long with a longest span of 38 ft (11.5 m) and a deck 27 ft wide.

Who owns NW 70 Ave. M.0-7.5 over S. Fork Ninnescah River?

It is owned by the County Highway Agency.