US Bridges

I-75 NB over Midland Road

Fair

Bay County, Michigan · 3.6 MI S of Kawkawlin · Structure no. 000000000000626

Built
2001
24 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
75 ft
1 main span
Daily traffic
18,568
2007 count
Owner
State
State Highway Agency

About this bridge

I-75 NB over Midland Road is a prestressed concrete stringer/multi-beam or girder carrying I-75 NB over Midland Road in Bay County, Michigan. It was built in 2001, so it is 24 years old, younger 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 6 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 18,568 vehicles a day, roughly 9% of them trucks, projected to reach 46,919 by 2018. The structure is 75 ft (22.9 m) long and 73 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-75 NB
CrossesMidland Road
Location3.6 MI S of Kawkawlin
RouteInterstate 75
CountyBay County
StateMichigan
Coordinates43.60244, -83.94785
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length75 ft (22.9 m)
Longest span73 ft (22.4 m)
Deck width73 ft (22.1 m)
Roadway width69 ft (21.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,568 (2007)
Projected traffic46,919 by 2018
Trucks9%
Lanes on structure4
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 Midland Road built?

It was built in 2001, making it 24 years old in 2025.

What condition is I-75 NB over Midland Road 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 December 2024.

How much traffic does I-75 NB over Midland Road carry?

About 18,568 vehicles per day (2007 count), of which roughly 9% are trucks.

How long is I-75 NB over Midland Road?

The structure is 75 ft (22.9 m) long with a longest span of 73 ft (22.4 m) and a deck 73 ft wide.

Who owns I-75 NB over Midland Road?

It is owned by the State Highway Agency.