US Bridges

NW 150th over May Branch

Fair

Butler County, Kansas · 7.5N 1.6E of Potwin · Structure no. 000000000080630

Built
1975
50 years old
Condition
Fair
inspected January 2025
Type
Tee Beam
Prestressed Concrete Continuous
Length
79 ft
3 main spans
Daily traffic
520
2021 count
Owner
County
County Highway Agency

About this bridge

NW 150th over May Branch is a prestressed concrete continuous tee beam carrying NW 150th over May Branch in Butler County, Kansas. It was built in 1975, so it is 50 years old, younger 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 520 vehicles a day, roughly 5% of them trucks, projected to reach 543 by 2045. The structure is 79 ft (24.2 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNW 150th
CrossesMay Branch
Location7.5N 1.6E of Potwin
RouteCounty Highway 86
CountyButler County
StateKansas
Coordinates38.04276, -96.99036
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.7 US tons
Inventory rating37.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length79 ft (24.2 m)
Longest span30 ft (9.1 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic520 (2021)
Projected traffic543 by 2045
Trucks5%
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 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 150th over May Branch built?

It was built in 1975, making it 50 years old in 2025.

What condition is NW 150th over May Branch 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 January 2025.

How much traffic does NW 150th over May Branch carry?

About 520 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is NW 150th over May Branch?

The structure is 79 ft (24.2 m) long with a longest span of 30 ft (9.1 m) and a deck 30 ft wide.

Who owns NW 150th over May Branch?

It is owned by the County Highway Agency.