US Bridges

Schoenherr RD over Sterling Relief Drain

Fair

Macomb County, Michigan · 0.5 MI S of 16 Mile RD · Structure no. 000000000006251

Built
1971
54 years old
Condition
Fair
inspected April 2023
Type
Culvert
Steel
Length
64 ft
4 main spans
Daily traffic
29,860
2012 count
Owner
County
County Highway Agency

About this bridge

Schoenherr RD over Sterling Relief Drain is a steel culvert carrying Schoenherr RD over Sterling Relief Drain in Macomb County, Michigan. It was built in 1971, so it is 54 years old, older 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 29,860 vehicles a day, roughly 5% of them trucks, projected to reach 40,221 by 2032. The structure is 64 ft (19.5 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSchoenherr RD
CrossesSterling Relief Drain
Location0.5 MI S of 16 Mile RD
RouteCounty Highway 2058
Coordinates42.56015, -82.98775
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span13 ft (3.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,860 (2012)
Projected traffic40,221 by 2032
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 Schoenherr RD over Sterling Relief Drain built?

It was built in 1971, making it 54 years old in 2025.

What condition is Schoenherr RD over Sterling Relief 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 April 2023.

How much traffic does Schoenherr RD over Sterling Relief Drain carry?

About 29,860 vehicles per day (2012 count), of which roughly 5% are trucks.

How long is Schoenherr RD over Sterling Relief Drain?

The structure is 64 ft (19.5 m) long with a longest span of 13 ft (3.9 m).

Who owns Schoenherr RD over Sterling Relief Drain?

It is owned by the County Highway Agency.