US Bridges

NW 30th ST over Brn. Whitewater River

Fair

Butler County, Kansas · 4.5S 0.5E of Potwin · Structure no. 000000000080580

Built
1961
64 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
36 ft
2 main spans
Daily traffic
285
2023 count
Owner
County
County Highway Agency

About this bridge

NW 30th ST over Brn. Whitewater River is a concrete culvert carrying NW 30th ST over Brn. Whitewater River in Butler County, Kansas. It was built in 1961, so it is 64 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 285 vehicles a day, roughly 1% of them trucks, projected to reach 241 by 2045. The structure is 36 ft (11 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNW 30th ST
CrossesBrn. Whitewater River
Location4.5S 0.5E of Potwin
RouteCounty Highway 85
CountyButler County
StateKansas
Coordinates37.86901, -97.00576
Functional classRural Major Collector

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 inspectionJuly 2024
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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating42.5 US tons
Inventory rating25.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length36 ft (11 m)
Longest span17 ft (5.2 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic285 (2023)
Projected traffic241 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 30th ST over Brn. Whitewater River built?

It was built in 1961, making it 64 years old in 2025.

What condition is NW 30th ST over Brn. Whitewater River 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 July 2024.

How much traffic does NW 30th ST over Brn. Whitewater River carry?

About 285 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is NW 30th ST over Brn. Whitewater River?

The structure is 36 ft (11 m) long with a longest span of 17 ft (5.2 m) and a deck 34 ft wide.

Who owns NW 30th ST over Brn. Whitewater River?

It is owned by the County Highway Agency.