US Bridges

NB Schoenherr RD over Plum Brook Drain

Fair

Macomb County, Michigan · 0.6 MI N of Metro. Pkwy · Structure no. 000000000006252

Built
1991
34 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
130 ft
2 main spans
Daily traffic
17,794
2007 count
Owner
County
County Highway Agency

About this bridge

NB Schoenherr RD over Plum Brook Drain is a prestressed concrete stringer/multi-beam or girder carrying NB Schoenherr RD over Plum Brook Drain in Macomb County, Michigan. It was built in 1991, so it is 34 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 17,794 vehicles a day, roughly 7% of them trucks, projected to reach 23,968 by 2027. The structure is 130 ft (39.6 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesNB Schoenherr RD
CrossesPlum Brook Drain
Location0.6 MI N of Metro. Pkwy
RouteCounty Highway 2058
CountyMacomb County
StateMichigan
Coordinates42.57241, -82.98975
Functional classUrban Other Principal 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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.6 US tons
Inventory rating53.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length130 ft (39.6 m)
Longest span63 ft (19.2 m)
Deck width39 ft (11.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,794 (2007)
Projected traffic23,968 by 2027
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 NB Schoenherr RD over Plum Brook Drain built?

It was built in 1991, making it 34 years old in 2025.

What condition is NB Schoenherr RD over Plum Brook Drain 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 May 2024.

How much traffic does NB Schoenherr RD over Plum Brook Drain carry?

About 17,794 vehicles per day (2007 count), of which roughly 7% are trucks.

How long is NB Schoenherr RD over Plum Brook Drain?

The structure is 130 ft (39.6 m) long with a longest span of 63 ft (19.2 m) and a deck 39 ft wide.

Who owns NB Schoenherr RD over Plum Brook Drain?

It is owned by the County Highway Agency.