US Bridges

NW 150th Road over W. Branch of Bluff Creek

GoodPosted for load

Harper County, Kansas · 9.0N 5.0W of Attica · Structure no. 000000000390360

Built
1963
62 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
25 ft
3 main spans
Daily traffic
200
2021 count
Owner
County
County Highway Agency

About this bridge

NW 150th Road over W. Branch of Bluff Creek is a concrete culvert carrying NW 150th Road over W. Branch of Bluff Creek in Harper County, Kansas. It was built in 1963, so it is 62 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 200 vehicles a day, roughly 3% of them trucks, projected to reach 140 by 2043. The structure is 25 ft (7.6 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNW 150th Road
CrossesW. Branch of Bluff Creek
Location9.0N 5.0W of Attica
RouteCounty Highway 978
CountyHarper County
StateKansas
Coordinates37.36961, -98.31117
Functional classRural Major 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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.1 US tons
Inventory rating22.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span8 ft (2.4 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic200 (2021)
Projected traffic140 by 2043
Trucks3%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$60,000
NavigationNo navigation control on waterway

Frequently asked questions

When was NW 150th Road over W. Branch of Bluff Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is NW 150th Road over W. Branch of Bluff Creek 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 April 2023.

How much traffic does NW 150th Road over W. Branch of Bluff Creek carry?

About 200 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is NW 150th Road over W. Branch of Bluff Creek?

The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m) and a deck 32 ft wide.

Who owns NW 150th Road over W. Branch of Bluff Creek?

It is owned by the County Highway Agency.