US Bridges

W. 70th Ave. N. over Slate Creek

Fair

Sumner County, Kansas · 0.4S 2.0W of Anson · Structure no. 000960795006640

Built
1978
47 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
10
2013 count
Owner
County
County Highway Agency

About this bridge

W. 70th Ave. N. over Slate Creek is a steel stringer/multi-beam or girder carrying W. 70th Ave. N. over Slate Creek in Sumner County, Kansas. It was built in 1978, so it is 47 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 6 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 10 vehicles a day, projected to reach 10 by 2043. The structure is 30 ft (9.2 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesW. 70th Ave. N.
CrossesSlate Creek
Location0.4S 2.0W of Anson
RouteCounty Highway 0
CountySumner County
StateKansas
Coordinates37.35859, -97.5687
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating34.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length30 ft (9.2 m)
Longest span29 ft (8.8 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic10 (2013)
Projected traffic10 by 2043
Trucks0%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$175,000
NavigationNo navigation control on waterway

Frequently asked questions

When was W. 70th Ave. N. over Slate Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is W. 70th Ave. N. over Slate Creek 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 May 2023.

How much traffic does W. 70th Ave. N. over Slate Creek carry?

About 10 vehicles per day (2013 count).

How long is W. 70th Ave. N. over Slate Creek?

The structure is 30 ft (9.2 m) long with a longest span of 29 ft (8.8 m) and a deck 24 ft wide.

Who owns W. 70th Ave. N. over Slate Creek?

It is owned by the County Highway Agency.