US Bridges

Mo 79 S over Cave CR

Fair

Marion County, Missouri · S 34 T 57 N R 4 W · Structure no. 5809

Built
1958
67 years old, rebuilt 1966
Condition
Fair
inspected October 2023
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
3,162
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 79 S over Cave CR is a concrete continuous culvert carrying Mo 79 S over Cave CR in Marion County, Missouri. It was built in 1958 and reconstructed in 1966, so it is 67 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 6 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 25 ft (7.7 m) long. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesMo 79 S
CrossesCave CR
LocationS 34 T 57 N R 4 W
RouteState Highway 79
CountyMarion County
StateMissouri
Coordinates39.69341, -91.33058
Functional classUrban 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 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 evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating79.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length25 ft (7.7 m)
Longest span12 ft (3.7 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 Cave CR built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1966.

What condition is Mo 79 S over Cave 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 October 2023.

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

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

How long is Mo 79 S over Cave CR?

The structure is 25 ft (7.7 m) long with a longest span of 12 ft (3.7 m).

Who owns Mo 79 S over Cave CR?

It is owned by the State Highway Agency.