US Bridges

NW 120th Ave over Stream

FairPosted for load

Harper County, Kansas · 1.7W 5.5N of Attica · Structure no. 000390719006685

Built
1953
72 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
10
2021 count
Owner
County
County Highway Agency

About this bridge

NW 120th Ave over Stream is a concrete continuous culvert carrying NW 120th Ave over Stream in Harper County, Kansas. It was built in 1953, so it is 72 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, projected to reach 10 by 2043. The structure is 29 ft (8.8 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 120th Ave
CrossesStream
Location1.7W 5.5N of Attica
RouteCounty Highway 0
CountyHarper County
StateKansas
Coordinates37.31883, -98.25792
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating15 US tons
Inventory rating15 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span14 ft (4.2 m)
Deck width20 ft (6.2 m)
Roadway width19 ft (5.7 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic10 (2021)
Projected traffic10 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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NW 120th Ave over Stream built?

It was built in 1953, making it 72 years old in 2025.

What condition is NW 120th Ave 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 120th Ave over Stream carry?

About 10 vehicles per day (2021 count).

How long is NW 120th Ave over Stream?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.2 m) and a deck 20 ft wide.

Who owns NW 120th Ave over Stream?

It is owned by the County Highway Agency.