US Bridges

Irwin Road over Coon Creek

Good

Macomb County, Michigan · 0.1 MI West of Coon Creek · Structure no. 000000000006291

Built
2015
10 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
132
2015 count
Owner
County
County Highway Agency

About this bridge

Irwin Road over Coon Creek is a concrete culvert carrying Irwin Road over Coon Creek in Macomb County, Michigan. It was built in 2015, so it is 10 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 132 vehicles a day, roughly 1% of them trucks, projected to reach 232 by 2035. 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
CarriesIrwin Road
CrossesCoon Creek
Location0.1 MI West of Coon Creek
RouteCounty Highway 0
CountyMacomb County
StateMichigan
Coordinates42.86429, -82.92351
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.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadGreater than HL 93
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 traffic132 (2015)
Projected traffic232 by 2035
Trucks1%
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 Irwin Road over Coon Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is Irwin Road over Coon Creek 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 Irwin Road over Coon Creek carry?

About 132 vehicles per day (2015 count), of which roughly 1% are trucks.

How long is Irwin Road over Coon Creek?

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

Who owns Irwin Road over Coon Creek?

It is owned by the County Highway Agency.