How common is it for a road to have an interchange for one direction while the other direction has an at-grade intersection? I've found three so far.
* US 20 in Illinois between East Dubuque and Galena:
http://maps.google.com/maps?hl=en&ie=UTF8&ll=42.462299,-90.515456&spn=0.005533,0.013733&t=k&z=17 (http://maps.google.com/maps?hl=en&ie=UTF8&ll=42.462299,-90.515456&spn=0.005533,0.013733&t=k&z=17)
* US 50 at MO 150 (I think this one is to become a full interchange soon):
http://maps.google.com/maps?hl=en&ie=UTF8&ll=38.868741,-94.172359&spn=0.005839,0.013733&t=k&z=17 (http://maps.google.com/maps?hl=en&ie=UTF8&ll=38.868741,-94.172359&spn=0.005839,0.013733&t=k&z=17)
* PA 28 at the 40th Street Bridge:
http://maps.google.com/maps?hl=en&ie=UTF8&ll=40.474171,-79.971387&spn=0.002852,0.006866&t=k&z=18 (http://maps.google.com/maps?hl=en&ie=UTF8&ll=40.474171,-79.971387&spn=0.002852,0.006866&t=k&z=18)
U.S. 23 South/441 South @ U.S. 441 Business South (Franklin, N.C.) (http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=Franklin,+Macon+County,+NC&sll=37.0625,-95.677068&sspn=33.847644,74.179688&ie=UTF8&hq=&hnear=Franklin,+Macon+County,+North+Carolina&ll=35.195344,-83.36179&spn=0.004261,0.009055&z=17&layer=c&cbll=35.195249,-83.361803&panoid=pdf3usXUQlR_4uXP3J9sbw&cbp=12,185.52,,0,-0.22)
U.S. 23 North/441 North @ U.S. 441 Business South (Franklin, N.C.) (http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=Franklin,+NC&sll=37.230328,-95.712891&sspn=33.788548,74.179688&ie=UTF8&hq=&hnear=Franklin,+Macon,+North+Carolina&ll=35.194012,-83.361543&spn=0.004261,0.009055&z=17&layer=c&cbll=35.193923,-83.361538&panoid=ZE_ODsBS0x3pFZgDbOg0Cg&cbp=12,300.78,,0,7.25)
Overhead view of U.S. 23/441 @ U.S. 441 Business South (Franklin, N.C.) (http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=Franklin,+NC&sll=37.230328,-95.712891&sspn=33.788548,74.179688&ie=UTF8&hq=&hnear=Franklin,+Macon,+North+Carolina&ll=35.194305,-83.361737&spn=0.004077,0.009055&t=h&z=17)
Be well,
Bryant
Quote from: Revive 755 on January 26, 2010, 01:29:57 PM
How common is it for a road to have an interchange for one direction while the other direction has an at-grade intersection? I've found three so far.
* PA 28 at the 40th Street Bridge:
http://maps.google.com/maps?hl=en&ie=UTF8&ll=40.474171,-79.971387&spn=0.002852,0.006866&t=k&z=18 (http://maps.google.com/maps?hl=en&ie=UTF8&ll=40.474171,-79.971387&spn=0.002852,0.006866&t=k&z=18)
Similar to this one is OR-43 at the west end of the Sellwood Bridge:
http://maps.google.com/?ie=UTF8&ll=45.464375,-122.668748&spn=0.002871,0.005745&t=k&z=18
--Andy
http://maps.google.co.uk/maps?&ie=UTF8&ll=51.262385,0.615063&spn=0.010903,0.01929&t=h&z=16
M20 j8 near Maidstone - originally the motorway to the north ended with a fork interchange on the A20. When the motorway was extended, they kept the flyover of the A20 forking off, dumped a roundabout at the end of the motorway and built a roundabout interchange over the motorway, as well as a service station.
http://maps.google.com/maps?ie=UTF8&ll=50.850675,-1.177345&spn=0.00275,0.006866&t=h&z=18
A32/A27 junction in Fareham - A27 westbound flys over alongside railway viaduct. Flyover extremely dodgy.
http://maps.google.com/maps?ie=UTF8&ll=51.487322,-0.251237&spn=0.005425,0.013733&t=h&z=17
Hogarth Roundabout, London. A316 London-bound has very dodgy temporary (been there nearly 40 years) flyover to A316 north and the A4 into London. Every other movement has to go via the roundabout.
http://maps.google.com/maps?ie=UTF8&ll=51.512962,-0.116966&spn=0.010843,0.027466&t=h&z=16
The Kingsway tunnel provides northbound bypass of the area around Aldwych for Waterloo Bridge to Kingsway traffic.
http://maps.google.com/maps?&ie=UTF8&ll=50.921696,-1.47146&spn=0.005492,0.013733&t=k&z=17
The A35 was originally fully grade-separated, but now westbound traffic has lights at the merge of the ramp from the roundabout and the flyover. Eastbound is free-flowing. A similar thing happens here (with lights on the northbound merge) on the A322 in Windsor http://maps.google.com/maps?&ie=UTF8&ll=51.483621,-0.623624&spn=0.002713,0.004823&t=k&z=17
There's lots of left filter routes, bypassing roundabouts, here but those junctions aren't two level, so I'll ignore them.
TX 44 & TX 359 near Alice:
http://maps.google.com/maps?ie=UTF8&ll=27.782176,-98.018593&spn=0.005695,0.00825&t=k&z=17
US 11 and PA 29 Jct. near Nanticoke, PA
http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=Nanticoke+pa&sll=36.597889,-61.083984&sspn=51.197893,114.169922&ie=UTF8&hq=&hnear=Nanticoke,+Luzerne,+Pennsylvania&ll=41.219163,-75.989513&spn=0.011686,0.010986&t=k&z=16
NB 11 has ramps to from 29.
On SB 11 you take a ramp to 29 and through traffic goes on the older alignment, but there's a local lane NB for people living along there. Traffic travelling to SB 11 (NB 29!) comes off a ramp but has to stop to join up with US 11 SB.
Quote* PA 28 at the 40th Street Bridge:
Preliminary work on redoing this one has begun. The bulk of the work begins later this year.
QuoteOverhead view of U.S. 23/441 @ U.S. 441 Business South (Franklin, N.C.)
This one doesn't count since it's just an at-grade intersection with a couple of "free right" movements. OP is looking for locations where you have a bona fide interchange in one direction.
QuoteUS 11 and PA 29 Jct. near Nanticoke, PA
Which I can only describe as..."weird"...
One that hasn't been mentioned yet....Lake Shore Dr (US 41) at McFretridge Dr (http://maps.google.com/maps?hl=en&ie=UTF8&t=h&ll=41.864999,-87.619062&spn=0.002001,0.006845&z=18) in Chicago.
I think this counts. Earhart Blvd @ S. Broad Ave (http://maps.google.com/?ie=UTF8&ll=29.955009,-90.095927&spn=0.005708,0.015407&z=17) & Lapalco Blvd @ Destrehan Ave (http://maps.google.com/?ie=UTF8&ll=29.870234,-90.073149&spn=0.02285,0.061626&z=15)
Lake Shore Drive (US-41) used to have one of these in Chicago at 47th Street. The southbound lanes had a typical diamond interchange, and the northbound lanes had a left turn T-type intersection (no signals). IIRC, it was replaced with a standard diamond in the 1990s.
Quote from: Revive 755 on January 26, 2010, 01:29:57 PM
How common is it for a road to have an interchange for one direction while the other direction has an at-grade intersection? I've found three so far.
* PA 28 at the 40th Street Bridge:
http://maps.google.com/maps?hl=en&ie=UTF8&ll=40.474171,-79.971387&spn=0.002852,0.006866&t=k&z=18 (http://maps.google.com/maps?hl=en&ie=UTF8&ll=40.474171,-79.971387&spn=0.002852,0.006866&t=k&z=18)
It is quite common around Pittsburgh:
PA 837 at the Rankin Bridge (http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=Rankin,+PA&sll=40.344398,-79.883641&sspn=0.002036,0.004823&ie=UTF8&hq=&hnear=Rankin,+Allegheny,+Pennsylvania&ll=40.403875,-79.882472&spn=0.001017,0.002411&t=k&z=19)
PA 837 at the McKeesport-Duquesne Bridge (http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=McKeesport,+PA&sll=40.403875,-79.882472&sspn=0.001017,0.002411&ie=UTF8&hq=&hnear=McKeesport,+Allegheny,+Pennsylvania&ll=40.362013,-79.84314&spn=0.004071,0.009645&t=k&z=17)
West 5th Avenue at the Mansfield Bridge (http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=McKeesport,+PA&sll=40.403801,-79.882407&sspn=0.001025,0.002411&ie=UTF8&hq=&hnear=McKeesport,+Allegheny,+Pennsylvania&ll=40.344398,-79.883641&spn=0.002036,0.004823&t=k&z=18)
Freeport Road (old PA 28) at the New Kensington Bridge (old PA 56) (http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=New+Kensington,+PA&sll=40.56352,-79.773759&sspn=0.001015,0.002411&ie=UTF8&hq=&hnear=New+Kensington,+Westmoreland,+Pennsylvania&ll=40.563548,-79.773847&spn=0.001015,0.002411&t=k&z=19)
PA 51 at the Sewickley Bridge (http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=Sewickley,+PA&sll=40.563548,-79.773847&sspn=0.001015,0.002411&ie=UTF8&hq=&hnear=Sewickley,+Allegheny,+Pennsylvania&ll=40.531117,-80.189796&spn=0.001015,0.002411&t=k&z=19)
PA 51 at the Ambridge-Aliquippa Bridge (http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=Ambridge,+PA&sll=40.59235,-80.237762&sspn=0.002029,0.004823&ie=UTF8&hq=&hnear=Ambridge,+Beaver,+Pennsylvania&ll=40.592142,-80.240297&spn=0.001022,0.002411&t=k&z=19)
PA 65 at the Monaca-East Rochester Bridge (http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=Rochester,+PA&sll=40.592142,-80.240297&sspn=0.001022,0.002411&ie=UTF8&hq=&hnear=Rochester,+Beaver,+Pennsylvania&ll=40.695326,-80.265335&spn=0.001013,0.002411&t=k&z=19)