US Bridges

Irwin Road over Newland Drain

Fair

Macomb County, Michigan · 0.1 MI E of Romeo Plank · Structure no. 000000000006290

Built
1971
54 years old
Condition
Fair
inspected July 2024
Type
Culvert
Steel
Length
34 ft
3 main spans
Daily traffic
70
2010 count
Owner
County
County Highway Agency

About this bridge

Irwin Road over Newland Drain is a steel culvert carrying Irwin Road over Newland Drain in Macomb County, Michigan. It was built in 1971, so it is 54 years old, older 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 5 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 70 vehicles a day, roughly 2% of them trucks, projected to reach 126 by 2030. The structure is 34 ft (10.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIrwin Road
CrossesNewland Drain
Location0.1 MI E of Romeo Plank
RouteCounty Highway 0
CountyMacomb County
StateMichigan
Coordinates42.86385, -82.96422
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating103.2 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadH 20
Structure length34 ft (10.3 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2010)
Projected traffic126 by 2030
Trucks2%
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 Newland Drain built?

It was built in 1971, making it 54 years old in 2025.

What condition is Irwin Road over Newland Drain 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 July 2024.

How much traffic does Irwin Road over Newland Drain carry?

About 70 vehicles per day (2010 count), of which roughly 2% are trucks.

How long is Irwin Road over Newland Drain?

The structure is 34 ft (10.3 m) long with a longest span of 9 ft (2.7 m).

Who owns Irwin Road over Newland Drain?

It is owned by the County Highway Agency.