US Bridges

Nw. 80th Road over Stream

FairPosted for load

Harper County, Kansas · 1.0S 3.4W of Harper · Structure no. 000390737606760

Built
1925
100 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Concrete
Length
22 ft
1 main span
Daily traffic
30
2021 count
Owner
County
County Highway Agency

About this bridge

Nw. 80th Road over Stream is a concrete tee beam carrying Nw. 80th Road over Stream in Harper County, Kansas. It was built in 1925, so it is 100 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 30 vehicles a day, projected to reach 30 by 2043. The structure is 22 ft (6.7 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNw. 80th Road
CrossesStream
Location1.0S 3.4W of Harper
RouteCounty Highway 0
CountyHarper County
StateKansas
Coordinates37.26797, -98.0815
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating20 US tons
Inventory rating20 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span20 ft (6 m)
Deck width20 ft (6.1 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic30 (2021)
Projected traffic30 by 2043
Trucks0%
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$31,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Nw. 80th Road over Stream built?

It was built in 1925, making it 100 years old in 2025.

What condition is Nw. 80th Road 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 April 2023.

How much traffic does Nw. 80th Road over Stream carry?

About 30 vehicles per day (2021 count).

How long is Nw. 80th Road over Stream?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6 m) and a deck 20 ft wide.

Who owns Nw. 80th Road over Stream?

It is owned by the County Highway Agency.