US Bridges

Rs 1646 12.7-18.8 over Trib. Marais Des Cygnes

FairPosted for load

Franklin County, Kansas · 0.6S.W. of Peoria · Structure no. 000000000300610

Built
1970
55 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
92 ft
3 main spans
Daily traffic
42
2010 count
Owner
County
County Highway Agency

About this bridge

Rs 1646 12.7-18.8 over Trib. Marais Des Cygnes is a steel continuous stringer/multi-beam or girder carrying Rs 1646 12.7-18.8 over Trib. Marais Des Cygnes in Franklin 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 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 42 vehicles a day, projected to reach 68 by 2043. The structure is 92 ft (28 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesRs 1646 12.7-18.8
CrossesTrib. Marais Des Cygnes
Location0.6S.W. of Peoria
RouteCounty Highway 1646
CountyFranklin County
StateKansas
Coordinates38.57424, -95.15788
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating19.7 US tons
Inventory rating11.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length92 ft (28 m)
Longest span35 ft (10.6 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic42 (2010)
Projected traffic68 by 2043
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 Rs 1646 12.7-18.8 over Trib. Marais Des Cygnes built?

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

What condition is Rs 1646 12.7-18.8 over Trib. Marais Des Cygnes 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 August 2024.

How much traffic does Rs 1646 12.7-18.8 over Trib. Marais Des Cygnes carry?

About 42 vehicles per day (2010 count).

How long is Rs 1646 12.7-18.8 over Trib. Marais Des Cygnes?

The structure is 92 ft (28 m) long with a longest span of 35 ft (10.6 m) and a deck 30 ft wide.

Who owns Rs 1646 12.7-18.8 over Trib. Marais Des Cygnes?

It is owned by the County Highway Agency.