US Bridges

I-75 NB over Barnard Drain

Good

Oakland County, Michigan · 0.3 MI S of Maple RD · Structure no. 000000000014267

Built
2019
6 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
64,324
2018 count
Owner
State
State Highway Agency

About this bridge

I-75 NB over Barnard Drain is a prestressed concrete stringer/multi-beam or girder carrying I-75 NB over Barnard Drain in Oakland County, Michigan. It was built in 2019, so it is 6 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 64,324 vehicles a day, roughly 9% of them trucks, projected to reach 73,973 by 2038. The structure is 41 ft (12.5 m) long and 76 ft wide.

Location

Open in Google Maps
CarriesI-75 NB
CrossesBarnard Drain
Location0.3 MI S of Maple RD
RouteInterstate 75
CountyOakland County
StateMichigan
Coordinates42.54549, -83.11642
Functional classUrban Principal Arterial - Interstate

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.9 US tons
Inventory rating63.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length41 ft (12.5 m)
Longest span38 ft (11.7 m)
Deck width76 ft (23.2 m)
Roadway width73 ft (22.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic64,324 (2018)
Projected traffic73,973 by 2038
Trucks9%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 I-75 NB over Barnard Drain built?

It was built in 2019, making it 6 years old in 2025.

What condition is I-75 NB over Barnard 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 December 2023.

How much traffic does I-75 NB over Barnard Drain carry?

About 64,324 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is I-75 NB over Barnard Drain?

The structure is 41 ft (12.5 m) long with a longest span of 38 ft (11.7 m) and a deck 76 ft wide.

Who owns I-75 NB over Barnard Drain?

It is owned by the State Highway Agency.