Interstate 75 in Michigan

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Interstate 75
Main route of the Interstate Highway System
Length: 395.54 mi[1] (636.56 km)
Formed: 1958 (completed 1973)
South end: I-75 near Erie
Major
junctions:		 I-96 in Detroit
I-94 in Detroit
I-69 in Flint
North end: Int'l Bridge in Sault Ste. Marie, MI
Michigan highways
< M-74 M-75 >

Interstate 75 is one of Michigan's longest numbered highways within the state. It begins at the state line just north of Toledo and runs to Detroit then heads towards Pontiac and then north to Bay City. It then heads towards the middle of the state going northwest then up to the Mackinac Bridge and finally into Canada at Sault Ste Marie. The total length in state is 395 miles.

Contents

[edit] Route description

[edit] Major cities

Interstate 96 – Major cities
Officially designated control cities in bold.[2]

[edit] Interchanges with other freeways

For a complete exit list for Interstate 75, see Exit list of Interstate 75 in Michigan

Interstate 75 uses a mile-based exit system for its entire length; each exit number corresponds to the next highest milepost number. The mile numbers increase as the highways progresses from south to north. Moving from the Monroe area to Sault Ste Marie, Interstate 75 has interchanges with the following four-lane or higher limited access freeways/expressways:

Intersecting Route Exit Location Link
Interstate 275 20 North of Monroe Google Maps link
M-39
"Southfield Highway"		 41 South of Detroit Google Maps link
Interstate 96
"Jeffries Freeway"		 48 Detroit Google Maps link
M-10
"Lodge Freeway"		 49B Detroit Google Maps link
Interstate 375
"Walter P. Chrysler Freeway"		 51B Detroit Google Maps link
Interstate 94
"Edsel Ford Freeway"		 53B Detroit Google Maps link
M-8
"Davison Expressway"		 56 Detroit Google Maps link
Interstate 696
"Walter P. Reuther Freeway"		 61 North of Detroit Google Maps link
M-59
"Veterans Memorial Freeway"		 77 East of Pontiac Google Maps link
Interstate 475
"UAW Freeway"		 111 South of Flint Google Maps link
US 23 South N/A South of Flint Google Maps link
Interstate 69
"Chevrolet-Buick Freeway"		 117A Flint Google Maps link
Interstate 475
"UAW Freeway"		 125 Flint Google Maps link
Interstate 675 150 Saginaw Google Maps link
Interstate 675 155 Saginaw Google Maps link
US 10 162B Bay City Google Maps link
M-13 Connector 164 Bay City Google Maps link
US 127 249 South of Grayling Google Maps link

[edit] Spur Routes

I-275 - Begins as a loop from Northern Monroe County and continues to connect up with Interestate 696. Was going to connect back up with I-75 north of Pontiac. Serves the Western population centers of Wayne County and the Metro Airport.

I-375 - Is the shortest signed Interstate in the nation. It serves the immediate downtown areas.

I-475 - Known as the U.A.W. Freeway. Serves Flint's downtown areas as I-75 goes to the west side of the city.

I-675 - A loop into the city of Saginaw and back out north of the city. Serves as an alternate to I-75 when the drawbridge over the Saginaw River was still operating.

 Auxiliary routes of Interstate 75
Current and Future (F) Former
I-175 Florida - Kentucky/Tennessee
I-275 Florida - Indiana/Kentucky/Ohio - Michigan - Tennessee
I-375 Florida - Michigan
I-475 Georgia - Michigan - Ohio
I-575 Georgia
I-675 Georgia - Michigan - Ohio

[edit] Lane configurations

  • between northern terminus and south end of Grayling Business Loop I-75 (2 lanes on each side; excluding Mackinac Bridge toll booth)
  • between south end of Grayling's BL I-75 and US 127 (formerly US 27) (3 lanes southbound, 2 lanes northbound)
  • between US 127 and Exit 164 (M-13 Connector) (2 lanes on each side)
  • between Exit 164 and Exit 162 (US 10) (4 lanes each way)
  • between US 10 and Adam Street Exit (exit 154) (3 lanes on each side)
  • between Adams St./Zilwaukee (exit 154) and M-13 (exit 153) (4 lanes on each side) — Zilwaukee Bridge
  • between M-13 and Mile Marker 138 (3 lanes on each side)
  • between mile marker 138 (2 miles before Birch Run Road M-54/M-83) and north end of I-475 (Exit 126) (4 lanes each way)
  • between the northern I-475 interchange (126) and US 23 (Exit 117) (3 lanes each way)
  • between US 23 and southern end of I-475 (2 lanes on each side)
  • between I-475 and Joslyn Road (Exit 83) (3 lanes on each side)
  • between Joslyn Road (Exit 83) and Exit 75 (Square Lake Road) (4 lanes each way)
  • between Exit 75 and Exit 59 (M-102/Eight Mile Road) (3 lanes each way)
  • from Exit 59 to I-375 (4 lanes each way)
  • through I-375 interchange (2 lanes each way around ramps)
  • from I-375 to I-96 (4 lanes each way)
  • through I-96 interchange (2 lanes each way)
  • from I-96 to Exit 43 (M-85/Fort Street) (4 lanes each way)
  • from Exit 43 to Ohio line (3 lanes each way)

[edit] History

Before any segment of freeway in Michigan received a designation of Interstate 75, there were already segments of freeway built which are now part of I-75. These freeway segments were built from the mid to late 1950s; they include:

  • US 2 between what is now known as BL I-75 in St. Ignace and M-123. The Upper Peninsula's first segment of freeway.
  • Alt US 24 between Ohio border and US 25 (now M-125) - Michigan's first segment of freeway to connect the state border; and the only freeway to cross the border until the late 1960s.
  • Mackinac Bridge (then US 27)
  • M-20 (now part of US 10) - when this segment of freeway became US 10; it carried the temporary Interstate 75 designation.
This list is incomplete; you can help by expanding it.
Mackinac Bridge
Mackinac Bridge

[edit] Future

Currently two projects are being looked at. The First is located in the Bay Region and the Second is in the Metro Region. For the Bay Region they are looking at I 75 from just north of Saginaw to the US 10 interchange. For the Metro Region they are looking at the border of Oakland and Wayne County to M 59 just north of Pontiac.

[edit] References

  1. ^ Route Log - Main Routes of the Eisenhower National System Of Interstate and Defense Highways - Table 1
  2. ^ List of Control Cities for Use in Guide Signs on Interstate Highways. (Accessed Feburary 17, 2006).

[edit] External links


edit
Main Interstate Highways (multiples of 5 in pink)		 Interstate Highway marker
4 5 8 10 12 15 16 17 19 20 22 24 25 26 27 29 30
35 37 39 40 43 44 45 49 55 57 59 64 65 66 66 (W) 68
69 70 71 72 73 74 75 76 (W) 76 (E) 77 78 79 80 81 82
83 84 (W) 84 (E) 85 86 (W) 86 (E) 87 88 (W) 88 (E) 89 90
91 93 94 95 96 97 99 (238) H-1 H-2 H-3
Unsigned  A-1 A-2 A-3 A-4 PRI-1 PRI-2 PRI-3
Lists  Main - Auxiliary - Suffixed - Business - Proposed - Unsigned
Gaps - Intrastate - Interstate standards - Replaced
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