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Old 10-01-2019, 06:40 PM
 
6,409 posts, read 2,622,042 times
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I've been kind of wondering this. After you get east of Jackson, until the I-59 interchange, there are alot of sections with forested medians where the is widely divided and each side of the interstate zags through forestry for no apparent reason, although usually keeping the same general direction where as in Lousianna its just flat and straight. I was wondering if they intentionally did this to keep drivers more aware or attentful while driving or if it was plainly cheaper to design it this way.
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Old 10-01-2019, 07:57 PM
 
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most likely it was easier to go around a hill than to level it off evenly. many of the state's highways followed similar designs, the original 2 lane side of 82 from Greenwood to Winona is a classic example. the northern lanes(westbound) are like a roller coaster, while the east bound lanes that were added later to make it a 4 lane divided highway are fairly well leveled off and straightened out much more. i'm sure the interstate probably was originally a regular highway in much of its length across the state and thus followed that path when built.
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Old 10-01-2019, 10:00 PM
 
975 posts, read 1,018,871 times
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Quote:
Originally Posted by gvillesux View Post
the original 2 lane side of 82 from Greenwood to Winona is a classic example. the northern lanes(westbound) are like a roller coaster, while the east bound lanes that were added later to make it a 4 lane divided highway are fairly well leveled off and straightened out much more.

Haha, truth to this, I travel that section often. I've always toyed with checking the difference in mileage each way, with the hills, the westbound lanes have to be a greater distance by a half-mile or so.

I55 from Jackson to Memphis has a lot of wooded medians too.
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Old 10-03-2019, 08:16 PM
 
Location: Chattanooga, TN
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Most of the bends are to cross major roads or creeks/rivers at closer to 90° angles. Makes bridges much simpler.
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Old 10-03-2019, 09:51 PM
 
Location: Somewhere flat in Mississippi
10,062 posts, read 10,584,568 times
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Quote:
Originally Posted by gvillesux View Post
most likely it was easier to go around a hill than to level it off evenly. many of the state's highways followed similar designs, the original 2 lane side of 82 from Greenwood to Winona is a classic example. the northern lanes(westbound) are like a roller coaster, while the east bound lanes that were added later to make it a 4 lane divided highway are fairly well leveled off and straightened out much more. i'm sure the interstate probably was originally a regular highway in much of its length across the state and thus followed that path when built.
Highway 80 is on a different right-of-way than I-20 except for a few miles west of Meridian.
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