US Bridges

5th ST S over Mo 79

Fair

Marion County, Missouri · S 29 T 57 N R 4 W · Structure no. 6550

Built
1956
69 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
243 ft
3 main spans
Daily traffic
590
2024 count
Owner
State
State Highway Agency

About this bridge

5th ST S over Mo 79 is a steel continuous stringer/multi-beam or girder carrying 5th ST S over Mo 79 in Marion County, Missouri. It was built in 1956, so it is 69 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 590 vehicles a day, roughly 5% of them trucks, projected to reach 856 by 2044. The structure is 243 ft (74.1 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries5th ST S
CrossesMo 79
LocationS 29 T 57 N R 4 W
RouteCity Street 0
CountyMarion County
StateMissouri
Coordinates39.7131, -91.36227
Functional classUrban Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.7 US tons
Inventory rating23.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length243 ft (74.1 m)
Longest span99 ft (30.2 m)
Deck width38 ft (11.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic590 (2024)
Projected traffic856 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 5th ST S over Mo 79 built?

It was built in 1956, making it 69 years old in 2025.

What condition is 5th ST S over Mo 79 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 5th ST S over Mo 79 carry?

About 590 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is 5th ST S over Mo 79?

The structure is 243 ft (74.1 m) long with a longest span of 99 ft (30.2 m) and a deck 38 ft wide.

Who owns 5th ST S over Mo 79?

It is owned by the State Highway Agency.