US Bridges

Mo 6 E over Big Muddy CR

Good

Daviess County, Missouri · S 14 T 59 N R 27 W · Structure no. 31797

Built
2007
18 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
219 ft
3 main spans
Daily traffic
4,973
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 6 E over Big Muddy CR is a prestressed concrete continuous stringer/multi-beam or girder carrying Mo 6 E over Big Muddy CR in Daviess County, Missouri. It was built in 2007, so it is 18 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 4,973 vehicles a day, roughly 20% of them trucks, projected to reach 10,443 by 2044. The structure is 219 ft (66.8 m) long and 43 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesMo 6 E
CrossesBig Muddy CR
LocationS 14 T 59 N R 27 W
RouteState Highway 6
Coordinates39.93185, -93.89426
Functional classRural Principal Arterial - Other

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.4 US tons
Inventory rating45.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length219 ft (66.8 m)
Longest span87 ft (26.5 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,973 (2024)
Projected traffic10,443 by 2044
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 6 E over Big Muddy CR built?

It was built in 2007, making it 18 years old in 2025.

What condition is Mo 6 E over Big 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 November 2023.

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

About 4,973 vehicles per day (2024 count), of which roughly 20% are trucks.

How long is Mo 6 E over Big Muddy CR?

The structure is 219 ft (66.8 m) long with a longest span of 87 ft (26.5 m) and a deck 43 ft wide.

Who owns Mo 6 E over Big Muddy CR?

It is owned by the State Highway Agency.