US Bridges

M-51 over Mckinzie Creek

Fair

Berrien County, Michigan · At Cass CO Line · Structure no. 000000000000914

Built
2009
16 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
84 ft
1 main span
Daily traffic
6,654
2007 count
Owner
State
State Highway Agency

About this bridge

M-51 over Mckinzie Creek is a prestressed concrete box beam or girders - single or spread carrying M-51 over Mckinzie Creek in Berrien County, Michigan. It was built in 2009, so it is 16 years old, younger than the Michigan average of 48.3 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 6,654 vehicles a day, roughly 6% of them trucks, projected to reach 9,400 by 2028. The structure is 84 ft (25.6 m) long and 47 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesM-51
CrossesMckinzie Creek
LocationAt Cass CO Line
RouteState Highway 51
CountyBerrien County
StateMichigan
Coordinates41.88506, -86.22409
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating44.3 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length84 ft (25.6 m)
Longest span81 ft (24.7 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,654 (2007)
Projected traffic9,400 by 2028
Trucks6%
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

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 M-51 over Mckinzie Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is M-51 over Mckinzie Creek 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 August 2024.

How much traffic does M-51 over Mckinzie Creek carry?

About 6,654 vehicles per day (2007 count), of which roughly 6% are trucks.

How long is M-51 over Mckinzie Creek?

The structure is 84 ft (25.6 m) long with a longest span of 81 ft (24.7 m) and a deck 47 ft wide.

Who owns M-51 over Mckinzie Creek?

It is owned by the State Highway Agency.