US Bridges

K-7.1 Local over Unnamed Stream

Fair

Ottawa County, Kansas · 1.0E 4.1S of Delphos · Structure no. 000720777004082

Built
1984
41 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
34 ft
1 main span
Daily traffic
30
2001 count
Owner
County
County Highway Agency

About this bridge

K-7.1 Local over Unnamed Stream is a concrete culvert carrying K-7.1 Local over Unnamed Stream in Ottawa County, Kansas. It was built in 1984, so it is 41 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 30 vehicles a day, projected to reach 30 by 2044. The structure is 34 ft (10.4 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesK-7.1 Local
CrossesUnnamed Stream
Location1.0E 4.1S of Delphos
RouteCounty Highway 0
CountyOttawa County
StateKansas
Coordinates39.21666, -97.74229
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 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 alignment6: Equal to present minimum criteria
Operating rating75.9 US tons
Inventory rating45.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length34 ft (10.4 m)
Longest span34 ft (10.3 m)
Deck width30 ft (9.1 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic30 (2001)
Projected traffic30 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 K-7.1 Local over Unnamed Stream built?

It was built in 1984, making it 41 years old in 2025.

What condition is K-7.1 Local over Unnamed 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 February 2024.

How much traffic does K-7.1 Local over Unnamed Stream carry?

About 30 vehicles per day (2001 count).

How long is K-7.1 Local over Unnamed Stream?

The structure is 34 ft (10.4 m) long with a longest span of 34 ft (10.3 m) and a deck 30 ft wide.

Who owns K-7.1 Local over Unnamed Stream?

It is owned by the County Highway Agency.