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Routes Vs. Interstates

Old 02-03-2015, 06:54 AM
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Default Routes Vs. Interstates

If I'm correct all interstates that end in an even number are east/west and all interstate roadways that end in odd numbers run north/south.

Is there a rule for routes?
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Old 02-03-2015, 06:55 AM
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http://en.wikipedia.org/wiki/Route_number#United_States
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Old 02-03-2015, 07:01 AM
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And yet, I grew up on a farm between State Route 48 and State Route 42 in Ohio, two north-south roads, one paralleling I-75.

Go figure.
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Old 02-03-2015, 07:03 AM
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Generally, it's odd for north-south, even for east-west, multiple of 5 for interstate (still following odd & even rule) and three digits for semicircle or beltway.
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Old 02-03-2015, 07:13 AM
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And we had I-71 just a few miles away.

Ohio- known for not following the rules.
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Old 02-03-2015, 07:17 AM
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Originally Posted by YFMF View Post
If I'm correct all interstates that end in an even number are east/west and all interstate roadways that end in odd numbers run north/south.

Is there a rule for routes?
Interstates:
2-digit numbers: odd for north/south and increase from west to east (lowest numbers in the west); even for east/west and increase from south to north (lowest numbers in the south)
3-digit numbers: odd 1st number spur into a city; even 1st number goes around a city (spur/around is open to interpretation, though)

U.S. Routes (different than state routes):
2-digit numbers: odd USUALLY for north/south and increase from east to west (lowest numbers in the east); even USUALLY for east/west and increase from north to south (lowest numbers in the north)

For U.S. Routes, there are exceptions for the even/odd north/south "rules", but generally they run as described.
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Old 02-03-2015, 07:17 AM
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Originally Posted by yarcraft91 View Post
And yet, I grew up on a farm between State Route 48 and State Route 42 in Ohio, two north-south roads, one paralleling I-75.

Go figure.
48 north south, 42 more NE and SW

Where did you grow up? Lebanon, Waynesville, Xenia?
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Old 02-03-2015, 07:19 AM
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95 in CT runs east and west, but overall from ME to FL it is north-south
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Old 02-03-2015, 07:20 AM
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Route 3 in NJ runs east west, route 1 & 9 runs north south.
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Old 02-03-2015, 07:22 AM
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Route numbers increase as move from west to east.

While I knew that spur routes are numbered by adding a hundreds digit to the parent route, I did not know that the parity of the hundreds digit tells the nature of the spur route: odd hundreds digits like Interstate 393 only connect to the system at one end, while an even hundreds digit like Interstate 440 indicates that the route connects to another interstate at both ends.
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Old 02-03-2015, 07:37 AM
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Originally Posted by Think Done Deals View Post
48 north south, 42 more NE and SW

Where did you grow up? Lebanon, Waynesville, Xenia?
Between Lebanon and Wayneville, went to school in Springboro and Lebanon- we were right on the line between the two districts.

Oh- and I-71, as you know, E/W at one end, NE/SW at the other end, interstate number is out-of-sequence with other US interstates.

And you may know that, at one time, I-75 had a traffic light in downtown Dayton. It was the only traffic light on that interstate between Sault St. Marie and Key West. Sat at that light a few times, wondering "What's up with this?"
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Old 02-03-2015, 08:49 AM
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Originally Posted by YFMF View Post
Route 3 in NJ runs east west, route 1 & 9 runs north south.
and I-195 is east/west.
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Old 02-03-2015, 10:46 AM
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I4 - What direction does it go?
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Old 02-03-2015, 10:59 AM
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route = what receivers run

intersate = a battery company
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Old 02-03-2015, 11:02 AM
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Interstate Hwys - yes.

Although some may more run north/south than east and west....an example would be I-4 across florida.

Lower numbers (even) further south. Lower numbers (odd) further west.

3 digit interstates are supposed to be "odd" numbers if they are a spur into the city....and "even" if they are a bypass around the city.

Also - a city wasn't supposed to have a bypass unless 2 or more interstates intersect in that city, although I think there are exceptions now.
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Old 02-03-2015, 01:37 PM
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Originally Posted by landfisher99 View Post

intersate = a battery company
Never heard of intersate, must be an off brand.
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Old 02-03-2015, 03:05 PM
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In Chesapeake, VA if you are on I64 eastbound, you are going west. I64 westbound, you are going east.
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