US Bridges

Minor 16.5-12.5 over Trib. Marais Des Cygnes

Fair

Franklin County, Kansas · 1.0W of Ottawa · Structure no. 000301041504885

Built
1974
51 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Prestressed Concrete Continuous
Length
84 ft
2 main spans
Daily traffic
75
2013 count
Owner
County
County Highway Agency

About this bridge

Minor 16.5-12.5 over Trib. Marais Des Cygnes is a prestressed concrete continuous tee beam carrying Minor 16.5-12.5 over Trib. Marais Des Cygnes in Franklin County, Kansas. It was built in 1974, so it is 51 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 75 vehicles a day, roughly 10% of them trucks, projected to reach 90 by 2043. The structure is 84 ft (25.6 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMinor 16.5-12.5
CrossesTrib. Marais Des Cygnes
Location1.0W of Ottawa
RouteCounty Highway 3018
CountyFranklin County
StateKansas
Coordinates38.63035, -95.27827
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating35.7 US tons
Inventory rating19.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length84 ft (25.6 m)
Longest span41 ft (12.4 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic75 (2013)
Projected traffic90 by 2043
Trucks10%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Minor 16.5-12.5 over Trib. Marais Des Cygnes built?

It was built in 1974, making it 51 years old in 2025.

What condition is Minor 16.5-12.5 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 June 2023.

How much traffic does Minor 16.5-12.5 over Trib. Marais Des Cygnes carry?

About 75 vehicles per day (2013 count), of which roughly 10% are trucks.

How long is Minor 16.5-12.5 over Trib. Marais Des Cygnes?

The structure is 84 ft (25.6 m) long with a longest span of 41 ft (12.4 m) and a deck 26 ft wide.

Who owns Minor 16.5-12.5 over Trib. Marais Des Cygnes?

It is owned by the County Highway Agency.