That particular stretch of road was built as one of the escape routes for hurricanes; we used to have very little routes for egress when big storms come rolling in. The state created new roads and expanded certain routes to ease the traffic. So, now there are nice roads that head toward the northerly direction from the MS gulf coast and often they're empty. This particular road is a portion of Hwy 67 from Biloxi, MS to Saucier, MS. I'm at the interchange from Hwy 605 and Hwy 67. It's clean, smooth and wide open. You can't help it and you'll often see speed in the triple digits.
You may find this hard to believe but not only have I been to Biloxi and Saucier more than twice I've driven hwy 67. Not bad for a New Yorker.