US Bridges

Mo 79 S over Marble CR

Fair

Ralls County, Missouri · S 2 T 56 N R 4 W · Structure no. 1029

Built
1964
61 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
53 ft
3 main spans
Daily traffic
3,162
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 79 S over Marble CR is a concrete continuous culvert carrying Mo 79 S over Marble CR in Ralls County, Missouri. It was built in 1964, so it is 61 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 3,162 vehicles a day, roughly 15% of them trucks, projected to reach 4,901 by 2044. The structure is 53 ft (16.3 m) long. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesMo 79 S
CrossesMarble CR
LocationS 2 T 56 N R 4 W
RouteState Highway 79
CountyRalls County
StateMissouri
Coordinates39.67116, -91.31031
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating89.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 20
Structure length53 ft (16.3 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,162 (2024)
Projected traffic4,901 by 2044
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 79 S over Marble CR built?

It was built in 1964, making it 61 years old in 2025.

What condition is Mo 79 S over Marble 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 November 2024.

How much traffic does Mo 79 S over Marble CR carry?

About 3,162 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is Mo 79 S over Marble CR?

The structure is 53 ft (16.3 m) long with a longest span of 13 ft (4 m).

Who owns Mo 79 S over Marble CR?

It is owned by the State Highway Agency.