US Bridges

28 Mile Road over N B Clinton River

Good

Macomb County, Michigan · 1.3 MI West of North Ave · Structure no. 000000000006370

Built
2018
7 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
75 ft
1 main span
Daily traffic
210
2017 count
Owner
County
County Highway Agency

About this bridge

28 Mile Road over N B Clinton River is a prestressed concrete stringer/multi-beam or girder carrying 28 Mile Road over N B Clinton River in Macomb County, Michigan. It was built in 2018, so it is 7 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 210 vehicles a day, roughly 5% of them trucks, projected to reach 257 by 2037. The structure is 75 ft (22.9 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries28 Mile Road
CrossesN B Clinton River
Location1.3 MI West of North Ave
RouteCounty Highway 0
Coordinates42.7466, -82.9065
Functional classRural Minor Collector

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.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating50 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length75 ft (22.9 m)
Longest span73 ft (22.1 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210 (2017)
Projected traffic257 by 2037
Trucks5%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$530,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 28 Mile Road over N B Clinton River built?

It was built in 2018, making it 7 years old in 2025.

What condition is 28 Mile Road over N B Clinton River 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 28 Mile Road over N B Clinton River carry?

About 210 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is 28 Mile Road over N B Clinton River?

The structure is 75 ft (22.9 m) long with a longest span of 73 ft (22.1 m) and a deck 39 ft wide.

Who owns 28 Mile Road over N B Clinton River?

It is owned by the County Highway Agency.