US Bridges

Aitken Road over Black River I/C Drain

Good

Sanilac County, Michigan · Sec 6-7 Lexington Twp · Structure no. 000000000009636

Built
2005
20 years old
Condition
Good
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
157 ft
3 main spans
Daily traffic
305
2010 count
Owner
County
County Highway Agency

About this bridge

Aitken Road over Black River I/C Drain is a prestressed concrete box beam or girders - multiple carrying Aitken Road over Black River I/C Drain in Sanilac County, Michigan. It was built in 2005, so it is 20 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 305 vehicles a day, roughly 5% of them trucks, projected to reach 550 by 2030. The structure is 157 ft (47.9 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesAitken Road
CrossesBlack River I/C Drain
LocationSec 6-7 Lexington Twp
RouteCounty Highway 0
Coordinates43.32197, -82.63509
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 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 rating41.4 US tons
Inventory rating31.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length157 ft (47.9 m)
Longest span73 ft (22.4 m)
Deck width31 ft (9.5 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic305 (2010)
Projected traffic550 by 2030
Trucks5%
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 Aitken Road over Black River I/C Drain built?

It was built in 2005, making it 20 years old in 2025.

What condition is Aitken 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 Aitken Road over Black River I/C Drain carry?

About 305 vehicles per day (2010 count), of which roughly 5% are trucks.

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

The structure is 157 ft (47.9 m) long with a longest span of 73 ft (22.4 m) and a deck 31 ft wide.

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

It is owned by the County Highway Agency.