US Bridges

NW 70 Ave. M.0-7.7 over Stream

FairPosted for load

Kingman County, Kansas · 7.0W of Kingman · Structure no. 000480721006247

Built
1945
80 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
39 ft
2 main spans
Daily traffic
30
2021 count
Owner
County
County Highway Agency

About this bridge

NW 70 Ave. M.0-7.7 over Stream is a wood or timber stringer/multi-beam or girder carrying NW 70 Ave. M.0-7.7 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 30 vehicles a day, roughly 3% of them trucks, projected to reach 12 by 2043. The structure is 39 ft (11.9 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesNW 70 Ave. M.0-7.7
CrossesStream
Location7.0W of Kingman
RouteCounty Highway 0
CountyKingman County
StateKansas
Coordinates37.63642, -98.24592
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
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
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating21.4 US tons
Inventory rating11.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length39 ft (11.9 m)
Longest span19 ft (5.7 m)
Deck width25 ft (7.6 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic30 (2021)
Projected traffic12 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 statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$230,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was NW 70 Ave. M.0-7.7 over Stream built?

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

What condition is NW 70 Ave. M.0-7.7 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 70 Ave. M.0-7.7 over Stream carry?

About 30 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is NW 70 Ave. M.0-7.7 over Stream?

The structure is 39 ft (11.9 m) long with a longest span of 19 ft (5.7 m) and a deck 25 ft wide.

Who owns NW 70 Ave. M.0-7.7 over Stream?

It is owned by the County Highway Agency.