US Bridges

NW 60 RD over Cottonwood Creek

PoorPosted for load

Harper County, Kansas · 4.5W of Attica · Structure no. 000390713206800

Built
1918
107 years old
Condition
Poor
inspected February 2023
Type
Tee Beam
Concrete
Length
130 ft
6 main spans
Daily traffic
80
2021 count
Owner
County
County Highway Agency

About this bridge

NW 60 RD over Cottonwood Creek is a concrete tee beam carrying NW 60 RD over Cottonwood Creek in Harper County, Kansas. It was built in 1918, so it is 107 years old, older than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 80 vehicles a day, roughly 10% of them trucks, projected to reach 96 by 2043. The structure is 130 ft (39.6 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 60 RD
CrossesCottonwood Creek
Location4.5W of Attica
RouteCounty Highway 0
CountyHarper County
StateKansas
Coordinates37.23891, -98.30833
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, 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 evaluation2: Basically intolerable, requiring high priority of replacement
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 rating10 US tons
Inventory rating10 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadUnknown
Structure length130 ft (39.6 m)
Longest span21 ft (6.5 m)
Deck width20 ft (6.1 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic80 (2021)
Projected traffic96 by 2043
Trucks10%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$980,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was NW 60 RD over Cottonwood Creek built?

It was built in 1918, making it 107 years old in 2025.

What condition is NW 60 RD over Cottonwood Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2023.

How much traffic does NW 60 RD over Cottonwood Creek carry?

About 80 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is NW 60 RD over Cottonwood Creek?

The structure is 130 ft (39.6 m) long with a longest span of 21 ft (6.5 m) and a deck 20 ft wide.

Who owns NW 60 RD over Cottonwood Creek?

It is owned by the County Highway Agency.