US Bridges

Mo 106 E over Powder Mill

Fair

Shannon County, Missouri · S 9 T 29 N R 2 W · Structure no. 2607

Built
1973
52 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete Continuous
Length
46 ft
3 main spans
Daily traffic
335
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 106 E over Powder Mill is a concrete continuous culvert carrying Mo 106 E over Powder Mill in Shannon County, Missouri. It was built in 1973, so it is 52 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 335 vehicles a day, roughly 25% of them trucks, projected to reach 503 by 2044. The structure is 46 ft (13.9 m) long. If it were closed, the detour would be 72.1 mi (116 km).

CarriesMo 106 E
CrossesPowder Mill
LocationS 9 T 29 N R 2 W
RouteState Highway 106
Coordinates37.18936, -91.17294
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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating105.2 US tons
Inventory rating63.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 15
Structure length46 ft (13.9 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic335 (2024)
Projected traffic503 by 2044
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed72.1 mi (116 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 106 E over Powder Mill built?

It was built in 1973, making it 52 years old in 2025.

What condition is Mo 106 E over Powder Mill 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 December 2024.

How much traffic does Mo 106 E over Powder Mill carry?

About 335 vehicles per day (2024 count), of which roughly 25% are trucks.

How long is Mo 106 E over Powder Mill?

The structure is 46 ft (13.9 m) long with a longest span of 11 ft (3.4 m).

Who owns Mo 106 E over Powder Mill?

It is owned by the State Highway Agency.