Indulge me for a moment - because I've spent way too much time making this particular drive...

If you were to average 65 mph on the 270 miles between Houghton, MI and the Mackinac Bridge (v.s. averaging 55), you'd chop a solid 45 minutes off your trip, going from

**4 hours, 55 minutes** to

**4 hours, 10 minutes**.

*I say "average", because although you're momentarily slowed down in more populated areas, a typical driver doing 5 over basically cancels the slowdowns.*Now, for the remaining 232 miles to Lansing:

- In 1986, stuck at
**55** mph, that trip took you about **4 hours, 12 minutes**. - After Michigan raised the freeway speed limit to
**65** in the late '80s, that trip took about **3 hours, 33 minutes**, or a savings of nearly **40 minutes**. - When Michigan raised the freeway limit to
**70** in the late '90s, that trip took **3 hours, 18 minutes**, saving an additional **15 minutes.** - Finally, with the limit at
**75** south of the bridge, the trip now takes **3 hours, 6 minutes**.

You've gained an entire hour (and 6 minutes) back of your life!

Once MDOT raises the rest of the rural U.P. highways to 65, your ~500 mile trip between Houghton and Lansing will go from taking

**9 hours, 7 minutes** to

**7 hours, 16 minutes**. You've chopped damn near

**2 hours** off the trip! That's pretty significant!

Of course, we're assuming it's around Labor Day instead of, say, New Year's Day - lake effect snow has a way of slowing things down. I now make that trip to Houghton from Janesville, WI. By my rough calculations, the 363 mile trip (via Wausau and Rhinelander) currently takes

**5 hours, 48 minutes**. If Wisconsin adopted Michigan's maximum speed limits by highway type (and Michigan applied it to all of US-45 and M-26), I'd save about

**30 minutes**.