US Bridges

Koelkebeck RD over Mud CR

Fair

Franklin County, Missouri · S 13 T 44 N R 3 W · Structure no. 13545

Built
1998
27 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
32 ft
2 main spans
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

Koelkebeck RD over Mud CR is a concrete culvert carrying Koelkebeck RD over Mud CR in Franklin County, Missouri. It was built in 1998, so it is 27 years old, younger than the Missouri average of 45.1 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 180 by 2043. The structure is 32 ft (9.8 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesKoelkebeck RD
CrossesMud CR
LocationS 13 T 44 N R 3 W
RouteCounty Highway 41
CountyFranklin County
StateMissouri
Coordinates38.55964, -91.20964
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.5 US tons
Inventory rating36.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span15 ft (4.6 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic180 by 2043
Trucks5%
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 Koelkebeck RD over Mud CR built?

It was built in 1998, making it 27 years old in 2025.

What condition is Koelkebeck RD over Mud CR 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 March 2023.

How much traffic does Koelkebeck RD over Mud CR carry?

About 100 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Koelkebeck RD over Mud CR?

The structure is 32 ft (9.8 m) long with a longest span of 15 ft (4.6 m) and a deck 27 ft wide.

Who owns Koelkebeck RD over Mud CR?

It is owned by the County Highway Agency.