US Bridges

NW 120th Street over Small Stream

GoodPosted for load

Butler County, Kansas · 2.8E 2.5N of Whitewater · Structure no. 000080847305760

Built
1960
65 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
75
2023 count
Owner
County
County Highway Agency

About this bridge

NW 120th Street over Small Stream is a concrete culvert carrying NW 120th Street over Small Stream in Butler County, Kansas. It was built in 1960, so it is 65 years old, older than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 75 vehicles a day, roughly 2% of them trucks, projected to reach 75 by 2045. The structure is 21 ft (6.3 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNW 120th Street
CrossesSmall Stream
Location2.8E 2.5N of Whitewater
RouteCounty Highway 836
StateKansas
Coordinates37.9999, -97.09297
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2024
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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.7 US tons
Inventory rating16.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic75 (2023)
Projected traffic75 by 2045
Trucks2%
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NW 120th Street over Small Stream built?

It was built in 1960, making it 65 years old in 2025.

What condition is NW 120th Street over Small Stream in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does NW 120th Street over Small Stream carry?

About 75 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is NW 120th Street over Small Stream?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m) and a deck 32 ft wide.

Who owns NW 120th Street over Small Stream?

It is owned by the County Highway Agency.