US Bridges

I-75 NB over M-150 (rochester Rd)

Good

Oakland County, Michigan · In Troy · Structure no. 000000000008064

Built
2019
6 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
188 ft
2 main spans
Daily traffic
65,985
2007 count
Owner
State
State Highway Agency

About this bridge

I-75 NB over M-150 (rochester Rd) is a prestressed concrete stringer/multi-beam or girder carrying I-75 NB over M-150 (rochester Rd) 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 65,985 vehicles a day, roughly 8% of them trucks, projected to reach 73,450 by 2029. The structure is 188 ft (57.4 m) long and 88 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-75 NB
CrossesM-150 (rochester Rd)
LocationIn Troy
RouteInterstate 75
CountyOakland County
StateMichigan
Coordinates42.55961, -83.12954
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.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.7 US tons
Inventory rating43.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadGreater than HL 93
Structure length188 ft (57.4 m)
Longest span94 ft (28.7 m)
Deck width88 ft (26.7 m)
Roadway width82 ft (25.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65,985 (2007)
Projected traffic73,450 by 2029
Trucks8%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 NB over M-150 (rochester Rd) built?

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

What condition is I-75 NB over M-150 (rochester Rd) 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 2024.

How much traffic does I-75 NB over M-150 (rochester Rd) carry?

About 65,985 vehicles per day (2007 count), of which roughly 8% are trucks.

How long is I-75 NB over M-150 (rochester Rd)?

The structure is 188 ft (57.4 m) long with a longest span of 94 ft (28.7 m) and a deck 88 ft wide.

Who owns I-75 NB over M-150 (rochester Rd)?

It is owned by the State Highway Agency.