US Bridges

SW Platte RD over Little Platte Rvr

Good

DeKalb County, Missouri · S 18 T 57 N R 31 W · Structure no. 34141

Built
2011
14 years old
Condition
Good
inspected February 2023
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
25 ft
1 main span
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

SW Platte RD over Little Platte Rvr is a aluminum, wrought iron, or cast iron culvert carrying SW Platte RD over Little Platte Rvr in DeKalb County, Missouri. It was built in 2011, so it is 14 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 20 vehicles a day, roughly 10% of them trucks, projected to reach 23 by 2044. The structure is 25 ft (7.7 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesSW Platte RD
CrossesLittle Platte Rvr
LocationS 18 T 57 N R 31 W
RouteCounty Highway 405
Coordinates39.74732, -94.38496
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans1
Design loadUnknown
Structure length25 ft (7.7 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic23 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SW Platte RD over Little Platte Rvr built?

It was built in 2011, making it 14 years old in 2025.

What condition is SW Platte RD over Little Platte Rvr 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 SW Platte RD over Little Platte Rvr carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is SW Platte RD over Little Platte Rvr?

The structure is 25 ft (7.7 m) long with a longest span of 20 ft (6.1 m).

Who owns SW Platte RD over Little Platte Rvr?

It is owned by the County Highway Agency.