US Bridges

Imlay City Road over Whackenbush Drain

Good

St. Clair County, Michigan · Sec. 13-24 Emmett Twp. · Structure no. 000000000010161

Built
1994
31 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
130
1994 count
Owner
County
County Highway Agency

About this bridge

Imlay City Road over Whackenbush Drain is a concrete culvert carrying Imlay City Road over Whackenbush Drain in St. Clair County, Michigan. It was built in 1994, so it is 31 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 130 vehicles a day, projected to reach 220 by 2014. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesImlay City Road
CrossesWhackenbush Drain
LocationSec. 13-24 Emmett Twp.
RouteCounty Highway 0
CountySt. Clair County
StateMichigan
Coordinates43.02973, -82.76731
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionOctober 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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating28.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (1994)
Projected traffic220 by 2014
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Whackenbush Drain built?

It was built in 1994, making it 31 years old in 2025.

What condition is Imlay City Road over Whackenbush 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 October 2024.

How much traffic does Imlay City Road over Whackenbush Drain carry?

About 130 vehicles per day (1994 count).

How long is Imlay City Road over Whackenbush Drain?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m).

Who owns Imlay City Road over Whackenbush Drain?

It is owned by the County Highway Agency.