US Bridges

Mo 7 S over Big CR Moc RR

FairPosted for load

Cass County, Missouri · S 29 T 46 N R 30 W · Structure no. 6041

Built
1948
77 years old, rebuilt 1984
Condition
Fair
inspected July 2024
Type
Truss - Thru
Steel
Length
481 ft
1 main span
Daily traffic
6,285
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 7 S over Big CR Moc RR is a steel truss - thru carrying Mo 7 S over Big CR Moc RR in Cass County, Missouri. It was built in 1948 and reconstructed in 1984, so it is 77 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. Its operating status is: posted for load restriction.

It carries about 6,285 vehicles a day, roughly 10% of them trucks, projected to reach 11,627 by 2044. The structure is 481 ft (146.6 m) long and 29 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesMo 7 S
CrossesBig CR Moc RR
LocationS 29 T 46 N R 30 W
RouteState Highway 7
CountyCass County
StateMissouri
Coordinates38.77066, -94.27102
Functional classRural Minor Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating31.7 US tons
Inventory rating18.8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+4 approach)
Design loadH 15
Structure length481 ft (146.6 m)
Longest span131 ft (40 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck14 ft (4.2 m)

Traffic and service

Average daily traffic6,285 (2024)
Projected traffic11,627 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.8 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 7 S over Big CR Moc RR built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 1984.

What condition is Mo 7 S over Big CR Moc RR 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 July 2024.

How much traffic does Mo 7 S over Big CR Moc RR carry?

About 6,285 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Mo 7 S over Big CR Moc RR?

The structure is 481 ft (146.6 m) long with a longest span of 131 ft (40 m) and a deck 29 ft wide.

Who owns Mo 7 S over Big CR Moc RR?

It is owned by the State Highway Agency.