US Bridges

Mo 6 E over Grand Rvr Ovrfl

Fair

Daviess County, Missouri · S 16 T 59 N R 27 W · Structure no. 4438

Built
1968
57 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete Continuous
Length
115 ft
3 main spans
Daily traffic
4,837
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 6 E over Grand Rvr Ovrfl is a concrete continuous slab carrying Mo 6 E over Grand Rvr Ovrfl in Daviess County, Missouri. It was built in 1968, so it is 57 years old, older 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 5 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 4,837 vehicles a day, roughly 19% of them trucks, projected to reach 10,158 by 2044. The structure is 115 ft (35.1 m) long and 47 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Location

Open in Google Maps
CarriesMo 6 E
CrossesGrand Rvr Ovrfl
LocationS 16 T 59 N R 27 W
RouteState Highway 6
CountyDaviess County
StateMissouri
Coordinates39.92841, -93.93564
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.5 US tons
Inventory rating37.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length115 ft (35.1 m)
Longest span44 ft (13.4 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,837 (2024)
Projected traffic10,158 by 2044
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed39.8 mi (64 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 Grand Rvr Ovrfl built?

It was built in 1968, making it 57 years old in 2025.

What condition is Mo 6 E over Grand Rvr Ovrfl 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 November 2023.

How much traffic does Mo 6 E over Grand Rvr Ovrfl carry?

About 4,837 vehicles per day (2024 count), of which roughly 19% are trucks.

How long is Mo 6 E over Grand Rvr Ovrfl?

The structure is 115 ft (35.1 m) long with a longest span of 44 ft (13.4 m) and a deck 47 ft wide.

Who owns Mo 6 E over Grand Rvr Ovrfl?

It is owned by the State Highway Agency.