US Bridges

NW 20 St. B.8-5.0 over Stream

Good

Kingman County, Kansas · 2.0N 0.2W of Cunningham · Structure no. 000480699806200

Built
1986
39 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
25 ft
3 main spans
Daily traffic
50
2021 count
Owner
County
County Highway Agency

About this bridge

NW 20 St. B.8-5.0 over Stream is a concrete culvert carrying NW 20 St. B.8-5.0 over Stream in Kingman County, Kansas. It was built in 1986, so it is 39 years old, younger 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.

It carries about 50 vehicles a day, roughly 5% of them trucks, projected to reach 60 by 2043. The structure is 25 ft (7.6 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNW 20 St. B.8-5.0
CrossesStream
Location2.0N 0.2W of Cunningham
RouteCounty Highway 0
CountyKingman County
StateKansas
Coordinates37.67432, -98.43211
Functional classRural Local

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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40.1 US tons
Inventory rating24 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 20
Structure length25 ft (7.6 m)
Longest span8 ft (2.4 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic50 (2021)
Projected traffic60 by 2043
Trucks5%
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 20 St. B.8-5.0 over Stream built?

It was built in 1986, making it 39 years old in 2025.

What condition is NW 20 St. B.8-5.0 over 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 June 2024.

How much traffic does NW 20 St. B.8-5.0 over Stream carry?

About 50 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is NW 20 St. B.8-5.0 over Stream?

The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m) and a deck 28 ft wide.

Who owns NW 20 St. B.8-5.0 over Stream?

It is owned by the County Highway Agency.