What Is an Interstate 75-Mile Marker Map?


Quick Answer

Most detailed state road maps include tiny exit numbers corresponding to the small mile marker signs seen along the right side of the expressway. Markers on I-75 and other Interstates reset to "1" at state borders in the west or south and increase as the road heads eastbound and northbound.

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Full Answer

For example, a driver heading south on Interstate 75 in Michigan who passes mile marker 209 is 209 miles from the Ohio border. A driver in Frankenmuth can quickly determine from the map that he is 65 miles away from exit 144.

Mile markers are also beneficial in determining a precise location in the event of an emergency. For example, a driver experiencing car trouble in an unfamiliar area can direct assistance to the nearest mile marker.

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