In my endless research of Baltimore I have found some coincidences that I thought I would share with my loyal and not so loyal followers. I use the Baltimore Regional Rail Plan all the time for references almost daily whether it stays accurate in the long term or not. Every once in a while I'll look at the early interstate planning maps and see what was proposed and what was actually built. Truth be told only a fraction of what was on the drawing board was built. Baltimore was on the forefront of interstate rebellions winning two big victories although one still had repercussions on surrounding neighborhoods. There are still other interstate plans that few ever heard of or were scaled back so much that you could hardly tell that it was once proposed to be an expressway. It was quite obvious when the MTA came out with its "Baltimore Regional Rail Plan" in 2002 and its current right of ways for existing lines that old interstate and expressway right of ways were used and are continuing to be used for rail lines.
I-70 was supposed to extend from Cooks Lane to I-95 with an I-170 spur just east of Edmondson Village. The Red Line uses part of the killed I-70 project except that it joins route 40 at the Cooks Lane intercection rather then east of Edmondson Village.
There was a proposal to build the "Windlass Freeway" which was to be an extension of Moravia Road east of I-95 to White Marsh Boulevard. Part of I-695 used the Windlass Freeway right of way as does the MARC Line and the future more localized Purple Line.
There was a proposal to build a "Southwest Expressway" which would spur off of I-170 and use the MARC Penn Line alignment. This was kind of used as MLK Boulevard in the city and Southwestern Boulevard in the county but the two don't connect.
The Green Line does and will run along current and killed freeway rights of way. I-795 from Owings Mills to I-695 uses the same right of way. I-795 was supposed to go inside the Beltway and meet Wabash Avenue. I-795 never did but the Green Line does and travels above Wabash Avenue.
Perring Parkway is a scaled back version of "The Perring Freeway." I have no evidence to back this up but I believe that Mt. Pleasant Park and Golf Course were interchange right of ways to be used as part of the Perring Freeway. The Green Line extended Northeast from Hopkins will use this right of way.
These coincidences are too many and too interesting to ignore. As Mass Transit becomes the only alternative to get away from rising gas prices it will be interesting to see these freeways come to life as transit lines.