JLWM8609 Posted July 21, 2009 Share Posted July 21, 2009 Perhaps this is just a thing noticed by roadgeeks, I don't know, but all Interstates have exit numbers that roughly correspond to the mileage markers posted beside the road. When it comes to US Highways in Texas that have sections of freeway, not all exits are numbered, and milemarkers are rare. I've seen a few exceptions outside of Texas. Inside Texas I've seen exceptions such as the US 75 Central Expressway in Dallas which contains numbered exits and milemarkers, and a few numbered exits on US 59 in Livingston, though without milemarkers. Here's a link to a pic of exit "434D" in Livingston.http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=US+59,+Livingston,+TX&sll=32.79431,-96.792662&sspn=0.003923,0.010504&ie=UTF8&ll=30.719647,-94.95065&spn=0.004012,0.010504&t=h&z=17&layer=c&cbll=30.719519,-94.950765&panoid=c1Pr9Tk2wzvmECziSQhdOg&cbp=12,70.56,,0,-5.85I'm just curious if anyone knows what TxDOT's rationale behind this exclusion of mile markers and numbered exits on most US highways in Texas is. Seems like they would be helpful when it comes to emergency calls, especially milemarkers. It seems like telling 911 that an accident happened near milemarker xxx is better than saying "the accident is somewhere between Livingston and Houston." Link to comment Share on other sites More sharing options...
CDeb Posted July 21, 2009 Share Posted July 21, 2009 I don't know the rationale as to what they post and what they don't, but every road on the state system does have milepoint designations. Link to comment Share on other sites More sharing options...
JLWM8609 Posted July 21, 2009 Author Share Posted July 21, 2009 I don't know the rationale as to what they post and what they don't, but every road on the state system does have milepoint designations.I've seen what I assume are mile marker signs on some US and state highway signs in town, nowhere near as prominent as the signs on the Interstates. They're simply small green signs with tiny numbers on them, you can't see them well unless you're traveling slowly or at a stop. There's a US 90 Alt sign on OST and Almeda which has a number on it, 600-something, I can't remember exactly what it is. But US 90 Alt's length is much less than 600 miles. If I'm remembering correctly, it only runs from Seguin to the east side of Houston. That probably puts it somewhere closer to 200 miles in length instead. Link to comment Share on other sites More sharing options...
editor Posted July 22, 2009 Share Posted July 22, 2009 I bet MaxConcrete would have the answer. Shoot him a PM and let us know what he says. Link to comment Share on other sites More sharing options...
JLWM8609 Posted July 23, 2009 Author Share Posted July 23, 2009 I bet MaxConcrete would have the answer. Shoot him a PM and let us know what he says.Will do. Link to comment Share on other sites More sharing options...
MaxConcrete Posted July 24, 2009 Share Posted July 24, 2009 I bet MaxConcrete would have the answer. Shoot him a PM and let us know what he says.Unfortunately, I don't have the answer. It's certainly an interesting question, and I'm curious to know the policy. Link to comment Share on other sites More sharing options...
drone Posted July 27, 2009 Share Posted July 27, 2009 There's a US 90 Alt sign on OST and Almeda which has a number on it, 600-something, I can't remember exactly what it is. But US 90 Alt's length is much less than 600 miles. If I'm remembering correctly, it only runs from Seguin to the east side of Houston. That probably puts it somewhere closer to 200 miles in length instead.Actually, it ends in Van Horn and extends all the way to Florida. It's 1,633 miles long. http://en.wikipedia....i/U.S._Route_90Edit: Whoops. I got it a little mixed up. US 90 runs to Van Horn, US 90 ALT runs from Seguin to Houston. Link to comment Share on other sites More sharing options...
Gridlock Joe Posted August 3, 2009 Share Posted August 3, 2009 The markers on non-Interstate highways are part of the Texas Reference Marker System.TxDOT derives Reference marker numbers by imposing a grid on a map of Texas. Grid axes are set on extreme western and northern points, where numbering begins with ten. The first reference marker numbers match approximate grid locations. Subsequent marker numbers increase by two. Numbers increase north to south and west to east, depending on the highway's general direction. The numbers are continuous from beginning to end across the state and do not start over at county lines. More info here. Link to comment Share on other sites More sharing options...
JLWM8609 Posted August 4, 2009 Author Share Posted August 4, 2009 The markers on non-Interstate highways are part of the Texas Reference Marker System.TxDOT derives Reference marker numbers by imposing a grid on a map of Texas. Grid axes are set on extreme western and northern points, where numbering begins with ten. The first reference marker numbers match approximate grid locations. Subsequent marker numbers increase by two. Numbers increase north to south and west to east, depending on the highway's general direction. The numbers are continuous from beginning to end across the state and do not start over at county lines. More info here.Interesting reading. Thanks! Link to comment Share on other sites More sharing options...
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