US Bridges

NW 20 St. E.6-5.0 over Stream

FairPosted for load

Kingman County, Kansas · 2.0N 3.0E of Cunningham · Structure no. 000480705606200

Built
1945
80 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
71 ft
3 main spans
Daily traffic
40
2021 count
Owner
County
County Highway Agency

About this bridge

NW 20 St. E.6-5.0 over Stream is a wood or timber stringer/multi-beam or girder carrying NW 20 St. E.6-5.0 over Stream in Kingman County, Kansas. It was built in 1945, so it is 80 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. Its operating status is: posted for load restriction.

It carries about 40 vehicles a day, roughly 5% of them trucks, projected to reach 48 by 2043. The structure is 71 ft (21.6 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesNW 20 St. E.6-5.0
CrossesStream
Location2.0N 3.0E of Cunningham
RouteCounty Highway 0
CountyKingman County
StateKansas
Coordinates37.67439, -98.38156
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be 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 alignment6: Equal to present minimum criteria
Operating rating25.4 US tons
Inventory rating17.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadUnknown
Structure length71 ft (21.6 m)
Longest span23 ft (7 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.7 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic40 (2021)
Projected traffic48 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 20 St. E.6-5.0 over Stream built?

It was built in 1945, making it 80 years old in 2025.

What condition is NW 20 St. E.6-5.0 over 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 January 2023.

How much traffic does NW 20 St. E.6-5.0 over Stream carry?

About 40 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is NW 20 St. E.6-5.0 over Stream?

The structure is 71 ft (21.6 m) long with a longest span of 23 ft (7 m) and a deck 20 ft wide.

Who owns NW 20 St. E.6-5.0 over Stream?

It is owned by the County Highway Agency.