US Bridges

Malaruni RD over South River

Good

Marion County, Missouri · S 29 T 58 N R 5 W · Structure no. 36627

Built
2021
4 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
75 ft
1 main span
Daily traffic
250
2023 count
Owner
County
County Highway Agency

About this bridge

Malaruni RD over South River is a steel stringer/multi-beam or girder carrying Malaruni RD over South River in Marion County, Missouri. It was built in 2021, so it is 4 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 250 vehicles a day, roughly 10% of them trucks, projected to reach 313 by 2043. The structure is 75 ft (22.9 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesMalaruni RD
CrossesSouth River
LocationS 29 T 58 N R 5 W
RouteCounty Highway 187
Coordinates39.79264, -91.48753
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.2 US tons
Inventory rating58.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length75 ft (22.9 m)
Longest span73 ft (22.3 m)
Deck width27 ft (8.1 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic313 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Malaruni RD over South River built?

It was built in 2021, making it 4 years old in 2025.

What condition is Malaruni RD over South River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does Malaruni RD over South River carry?

About 250 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Malaruni RD over South River?

The structure is 75 ft (22.9 m) long with a longest span of 73 ft (22.3 m) and a deck 27 ft wide.

Who owns Malaruni RD over South River?

It is owned by the County Highway Agency.