US Bridges

NW 90th over Small Stream

Fair

Butler County, Kansas · 2.2W 1.0N of Potwin · Structure no. 000080849805820

Built
1927
98 years old
Condition
Fair
inspected February 2025
Type
Culvert
Concrete
Length
26 ft
3 main spans
Daily traffic
70
2023 count
Owner
County
County Highway Agency

About this bridge

NW 90th over Small Stream is a concrete culvert carrying NW 90th over Small Stream in Butler County, Kansas. It was built in 1927, so it is 98 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.

It carries about 70 vehicles a day, projected to reach 70 by 2045. The structure is 26 ft (7.9 m) long and 22 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNW 90th
CrossesSmall Stream
Location2.2W 1.0N of Potwin
RouteCounty Highway 0
CountyButler County
StateKansas
Coordinates37.9562, -97.06811
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 rating34.3 US tons
Inventory rating20.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span8 ft (2.4 m)
Deck width22 ft (6.6 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic70 (2023)
Projected traffic70 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NW 90th over Small Stream built?

It was built in 1927, making it 98 years old in 2025.

What condition is NW 90th over Small 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 2025.

How much traffic does NW 90th over Small Stream carry?

About 70 vehicles per day (2023 count).

How long is NW 90th over Small Stream?

The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m) and a deck 22 ft wide.

Who owns NW 90th over Small Stream?

It is owned by the County Highway Agency.