US Bridges

Mo 6 E over Muddy CR

Good

Grundy County, Missouri · S 22 T 61 N R 24 W · Structure no. 3822

Built
1990
35 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
202 ft
3 main spans
Daily traffic
5,007
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 6 E over Muddy CR is a prestressed concrete continuous stringer/multi-beam or girder carrying Mo 6 E over Muddy CR in Grundy County, Missouri. It was built in 1990, so it is 35 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,007 vehicles a day, roughly 10% of them trucks, projected to reach 6,509 by 2044. The structure is 202 ft (61.6 m) long and 57 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesMo 6 E
CrossesMuddy CR
LocationS 22 T 61 N R 24 W
RouteState Highway 6
Coordinates40.07562, -93.58942
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure9 ExcellentNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.4 US tons
Inventory rating39.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length202 ft (61.6 m)
Longest span68 ft (20.6 m)
Deck width57 ft (17.5 m)
Roadway width55 ft (16.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,007 (2024)
Projected traffic6,509 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Mo 6 E over Muddy CR built?

It was built in 1990, making it 35 years old in 2025.

What condition is Mo 6 E over Muddy CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Mo 6 E over Muddy CR carry?

About 5,007 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Mo 6 E over Muddy CR?

The structure is 202 ft (61.6 m) long with a longest span of 68 ft (20.6 m) and a deck 57 ft wide.

Who owns Mo 6 E over Muddy CR?

It is owned by the State Highway Agency.