US Bridges

Imlay City Road over Belle River Drain

Good

Lapeer County, Michigan · Sec. 16 Imlay Twp. · Structure no. 000000000005391

Built
2017
8 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
6,854
2016 count
Owner
County
County Highway Agency

About this bridge

Imlay City Road over Belle River Drain is a prestressed concrete box beam or girders - single or spread carrying Imlay City Road over Belle River Drain in Lapeer County, Michigan. It was built in 2017, so it is 8 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 6,854 vehicles a day, roughly 17% of them trucks, projected to reach 9,231 by 2036. The structure is 50 ft (15.2 m) long and 42 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesImlay City Road
CrossesBelle River Drain
LocationSec. 16 Imlay Twp.
RouteCounty Highway 4434
Coordinates43.03015, -83.06712
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating69.3 US tons
Inventory rating53.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length50 ft (15.2 m)
Longest span49 ft (14.8 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,854 (2016)
Projected traffic9,231 by 2036
Trucks17%
Lanes on structure2
Traffic directionTwo-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 Imlay City Road over Belle River Drain built?

It was built in 2017, making it 8 years old in 2025.

What condition is Imlay City Road over Belle River 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 September 2023.

How much traffic does Imlay City Road over Belle River Drain carry?

About 6,854 vehicles per day (2016 count), of which roughly 17% are trucks.

How long is Imlay City Road over Belle River Drain?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (14.8 m) and a deck 42 ft wide.

Who owns Imlay City Road over Belle River Drain?

It is owned by the County Highway Agency.