US Bridges

Applegate Road over Black River

Fair

Sanilac County, Michigan · Sec 26-35 Washington Twp · Structure no. 000000000009530

Built
1979
46 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
166 ft
3 main spans
Daily traffic
2,025
2010 count
Owner
County
County Highway Agency

About this bridge

Applegate Road over Black River is a prestressed concrete box beam or girders - multiple carrying Applegate Road over Black River 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 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 2,025 vehicles a day, roughly 10% of them trucks, projected to reach 3,655 by 2030. The structure is 166 ft (50.5 m) long and 34 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesApplegate Road
CrossesBlack River
LocationSec 26-35 Washington Twp
RouteCounty Highway 7436
CountySanilac County
StateMichigan
Coordinates43.35493, -82.64927
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length166 ft (50.5 m)
Longest span55 ft (16.8 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,025 (2010)
Projected traffic3,655 by 2030
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Applegate Road over Black River built?

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

What condition is Applegate Road over Black River 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 Applegate Road over Black River carry?

About 2,025 vehicles per day (2010 count), of which roughly 10% are trucks.

How long is Applegate Road over Black River?

The structure is 166 ft (50.5 m) long with a longest span of 55 ft (16.8 m) and a deck 34 ft wide.

Who owns Applegate Road over Black River?

It is owned by the County Highway Agency.