US Bridges

NW 80 RD 9.0-N.9 over Stream

FairPosted for load

Harper County, Kansas · 2.3E of Crystal Springs · Structure no. 000390735906760

Built
1940
85 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
82 ft
1 main span
Daily traffic
50
2021 count
Owner
County
County Highway Agency

About this bridge

NW 80 RD 9.0-N.9 over Stream is a steel stringer/multi-beam or girder carrying NW 80 RD 9.0-N.9 over Stream in Harper County, Kansas. It was built in 1940, so it is 85 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 50 vehicles a day, roughly 20% of them trucks, projected to reach 30 by 2043. The structure is 82 ft (25 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesNW 80 RD 9.0-N.9
CrossesStream
Location2.3E of Crystal Springs
RouteCounty Highway 0
CountyHarper County
StateKansas
Coordinates37.26814, -98.09469
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
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 rating7.8 US tons
Inventory rating3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1 (+3 approach)
Design loadUnknown
Structure length82 ft (25 m)
Longest span28 ft (8.5 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic50 (2021)
Projected traffic30 by 2043
Trucks20%
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$136,000
NavigationNo navigation control on waterway

Frequently asked questions

When was NW 80 RD 9.0-N.9 over Stream built?

It was built in 1940, making it 85 years old in 2025.

What condition is NW 80 RD 9.0-N.9 over Stream 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 February 2023.

How much traffic does NW 80 RD 9.0-N.9 over Stream carry?

About 50 vehicles per day (2021 count), of which roughly 20% are trucks.

How long is NW 80 RD 9.0-N.9 over Stream?

The structure is 82 ft (25 m) long with a longest span of 28 ft (8.5 m) and a deck 20 ft wide.

Who owns NW 80 RD 9.0-N.9 over Stream?

It is owned by the County Highway Agency.