What is a Super-2, really?

[cpzilliacus]

By definitions that include limited-access but not full access control, yes those would generally qualify.  NY 104 would go from from NY 88 (not quite to Williamson) to the Wayne-Cayuga line.  NY 3 more or less fits.  If not for a couple of farm access points near the northern Gloversville line and a couple driveways near CR 154, NY 30A's super-2 section would extend to NY 30 and then another mile up NY 30 towards Mayfield.

Maryland has a few "almost" Super-2 highways, such as these:


Howard County - MD-32 from MD-108 at Clarksville in the south to north of Pfefferkorn Road in West Friendship nearly qualifies, but has an at-grade crossing at the SHA and Howard County road maintenance shops.

That may not count as breakage in the highway as it's maintenance only area.

It also has a traffic signal for movements coming from the direction opposite to to the maintenance yards (in this case, southbound MD-32). Google satellite view is here.

[cpzilliacus]

"Limited access", by definition in most states (although Virginia for some reason swaps the definitions of limited-access and controlled-access), allows at-grade intersections.  Based on personal experience, most of your mentions would meet the Super-2 definition I described upthread.

You may well be correct. 

The old West Virginia Turnpike had left turns into and out of its service plazas when it was a two-lane undivided road. 

I did not experience those myself, but I have read that this design resulted in more than a few head-on crashes.

I prefer the definition that requires Super-2 roads have full access control without any crossing roads  at-grade.  And I do not like them in the United States, because most drivers have not seen such  a road.

[jeffandnicole]

"Limited access", by definition in most states (although Virginia for some reason swaps the definitions of limited-access and controlled-access), allows at-grade intersections.  Based on personal experience, most of your mentions would meet the Super-2 definition I described upthread.

You may well be correct. 

The old West Virginia Turnpike had left turns into and out of its service plazas when it was a two-lane undivided road. 

I did not experience those myself, but I have read that this design resulted in more than a few head-on crashes.

I prefer the definition that requires Super-2 roads have full access control without any crossing roads  at-grade.  And I do not like them in the United States, because most drivers have not seen such  a road.

I think the PA Turnpike had a paved median to cross over to the service plazas when they first opened as well.  You can see this at the abandoned Sideling Hill service plaza.

[hbelkins]

"Limited access", by definition in most states (although Virginia for some reason swaps the definitions of limited-access and controlled-access), allows at-grade intersections.  Based on personal experience, most of your mentions would meet the Super-2 definition I described upthread.

For years, Kentucky used the term "limited access" on its maps to denote interstates and parkways (or other freeways like New Circle Road, the westernmost part of KY 841 and the US 60 Owensboro bypass. I don't know what terminology is used now; I've quit paying attention.

West Virginia used "access fully controlled" for its interstates and other freeways, and "access partially controlled" for what we generally call expressways but they call "corridors" (as in APD corridors).