US Bridges

Mo 106 E over Mahans CR

Fair

Shannon County, Missouri · S 34 T 29 N R 4 W · Structure no. 4217

Built
1993
32 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
201 ft
4 main spans
Daily traffic
919
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 106 E over Mahans CR is a prestressed concrete continuous stringer/multi-beam or girder carrying Mo 106 E over Mahans CR in Shannon County, Missouri. It was built in 1993, so it is 32 years old, younger 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 919 vehicles a day, roughly 13% of them trucks, projected to reach 1,379 by 2044. The structure is 201 ft (61.3 m) long and 35 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

Open in Google Maps
CarriesMo 106 E
CrossesMahans CR
LocationS 34 T 29 N R 4 W
RouteState Highway 106
CountyShannon County
StateMissouri
Coordinates37.14626, -91.37929
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.4 US tons
Inventory rating46.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length201 ft (61.3 m)
Longest span51 ft (15.4 m)
Deck width35 ft (10.8 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic919 (2024)
Projected traffic1,379 by 2044
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 Mahans CR built?

It was built in 1993, making it 32 years old in 2025.

What condition is Mo 106 E over Mahans 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 December 2024.

How much traffic does Mo 106 E over Mahans CR carry?

About 919 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is Mo 106 E over Mahans CR?

The structure is 201 ft (61.3 m) long with a longest span of 51 ft (15.4 m) and a deck 35 ft wide.

Who owns Mo 106 E over Mahans CR?

It is owned by the State Highway Agency.