US Bridges

407th W over Trib. N. Fork Ninnescah

PoorPosted for load

Sedgwick County, Kansas · 407THW 0.8 N of 13THN · Structure no. 000870769006142

Built
1970
55 years old
Condition
Poor
inspected May 2023
Type
Culvert
Steel
Length
24 ft
3 main spans
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

407th W over Trib. N. Fork Ninnescah is a steel culvert carrying 407th W over Trib. N. Fork Ninnescah in Sedgwick County, Kansas. It was built in 1970, so it is 55 years old, older than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, projected to reach 80 by 2044. The structure is 24 ft (7.3 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries407th W
CrossesTrib. N. Fork Ninnescah
Location407THW 0.8 N of 13THN
RouteCounty Highway 0
CountySedgwick County
StateKansas
Coordinates37.71556, -97.80771
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating6.8 US tons
Inventory rating3.9 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckOther
Main spans3
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span6 ft (1.7 m)
Deck width22 ft (6.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic50 (2022)
Projected traffic80 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$150,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 407th W over Trib. N. Fork Ninnescah built?

It was built in 1970, making it 55 years old in 2025.

What condition is 407th W over Trib. N. Fork Ninnescah in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

How much traffic does 407th W over Trib. N. Fork Ninnescah carry?

About 50 vehicles per day (2022 count).

How long is 407th W over Trib. N. Fork Ninnescah?

The structure is 24 ft (7.3 m) long with a longest span of 6 ft (1.7 m) and a deck 22 ft wide.

Who owns 407th W over Trib. N. Fork Ninnescah?

It is owned by the County Highway Agency.