US Bridges

Local 19.6-N.7 over Marmaton River

FairPosted for load

Bourbon County, Kansas · W. Edge of Fort Scott · Structure no. 000061103605967

Built
1971
54 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
228 ft
3 main spans
Daily traffic
100
2006 count
Owner
County
County Highway Agency

About this bridge

Local 19.6-N.7 over Marmaton River is a steel continuous stringer/multi-beam or girder carrying Local 19.6-N.7 over Marmaton River in Bourbon County, Kansas. It was built in 1971, so it is 54 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 100 vehicles a day, roughly 15% of them trucks, projected to reach 100 by 2044. The structure is 228 ft (69.5 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesLocal 19.6-N.7
CrossesMarmaton River
LocationW. Edge of Fort Scott
RouteCounty Highway 0
CountyBourbon County
StateKansas
Coordinates37.83984, -94.71948
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating39.4 US tons
Inventory rating23 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length228 ft (69.5 m)
Longest span100 ft (30.5 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic100 (2006)
Projected traffic100 by 2044
Trucks15%
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$650,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Local 19.6-N.7 over Marmaton River built?

It was built in 1971, making it 54 years old in 2025.

What condition is Local 19.6-N.7 over Marmaton River 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 2024.

How much traffic does Local 19.6-N.7 over Marmaton River carry?

About 100 vehicles per day (2006 count), of which roughly 15% are trucks.

How long is Local 19.6-N.7 over Marmaton River?

The structure is 228 ft (69.5 m) long with a longest span of 100 ft (30.5 m) and a deck 28 ft wide.

Who owns Local 19.6-N.7 over Marmaton River?

It is owned by the County Highway Agency.