US Bridges

Stone Road over Black River I/C Drain

Good

Sanilac County, Michigan · Sec 14-23 Wheatland Twp · Structure no. 000000000009660

Built
1991
34 years old
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
49 ft
1 main span
Daily traffic
225
2010 count
Owner
County
County Highway Agency

About this bridge

Stone Road over Black River I/C Drain is a prestressed concrete box beam or girders - multiple carrying Stone Road over Black River I/C Drain in Sanilac 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 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 225 vehicles a day, roughly 10% of them trucks, projected to reach 405 by 2030. The structure is 49 ft (14.9 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesStone Road
CrossesBlack River I/C Drain
LocationSec 14-23 Wheatland Twp
RouteCounty Highway 0
Coordinates43.55417, -82.79476
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionMay 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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length49 ft (14.9 m)
Longest span47 ft (14.4 m)
Deck width31 ft (9.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic225 (2010)
Projected traffic405 by 2030
Trucks10%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Stone Road over Black River I/C Drain built?

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

What condition is Stone 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 May 2024.

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

About 225 vehicles per day (2010 count), of which roughly 10% are trucks.

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

The structure is 49 ft (14.9 m) long with a longest span of 47 ft (14.4 m) and a deck 31 ft wide.

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

It is owned by the County Highway Agency.