US Bridges

Forester Road over Black River I/C Drain

Good

Sanilac County, Michigan · Sec 12-13 Custer Twp · Structure no. 000000000009537

Built
1979
46 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
115 ft
2 main spans
Daily traffic
380
2010 count
Owner
County
County Highway Agency

About this bridge

Forester Road over Black River I/C Drain is a prestressed concrete stringer/multi-beam or girder carrying Forester Road over Black River I/C Drain in Sanilac County, Michigan. It was built in 1979, so it is 46 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 380 vehicles a day, roughly 10% of them trucks, projected to reach 685 by 2030. The structure is 115 ft (35.1 m) long and 34 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesForester Road
CrossesBlack River I/C Drain
LocationSec 12-13 Custer Twp
RouteCounty Highway 7462
Coordinates43.48152, -82.76231
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating68.6 US tons
Inventory rating52.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length115 ft (35.1 m)
Longest span56 ft (17.1 m)
Deck width34 ft (10.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic380 (2010)
Projected traffic685 by 2030
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

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 Forester Road over Black River I/C Drain built?

It was built in 1979, making it 46 years old in 2025.

What condition is Forester Road over Black River I/C Drain in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does Forester Road over Black River I/C Drain carry?

About 380 vehicles per day (2010 count), of which roughly 10% are trucks.

How long is Forester Road over Black River I/C Drain?

The structure is 115 ft (35.1 m) long with a longest span of 56 ft (17.1 m) and a deck 34 ft wide.

Who owns Forester Road over Black River I/C Drain?

It is owned by the County Highway Agency.