A few days ago in my hometown FB group someone posted a photo of this wall map of Southern Allegheny County. Like many maps of the era, the map shows the new PA 48 corridor. However, this was the first map that I have seen that gave a good idea of the route north of US 30 and into Monroeville.
"Highlights" include that the new 48 would after crossing US 30 (east of where the old K-Mart Plaza at PA 48 was/is) that it would head into the Turtle Creek Valley and into the southern limits of Trafford before turning west to parallel the railroad and PA 130 through the valley.
It crossed 48 again at the current-day PA 130/48 intersection (where the Sheetz is) and then would turn north to parallel Mosside Blvd (PA 48) to the west along Tilbrook Road.
The New 48 would cross PA 48 again at Northern Pike before tying into the US 22/Parkway East/PA Turnpike Interchange.
The routing would have taken out the Haymaker Village Shopping Plaza along PA 130 in Trafford. I wonder if the interchange at the PA 48/130 intersection (at the north side of the Wall Bridge) would have had possible connections built-in for the Tri-Boro Expressway (never made it that far east anyways).
Finally, it would have been interesting to see how the New 48 would have wound around the Gateway High School Complex at 48/Northern Pike. Gateway High School opened in 1958 - and most published corridor routes for the New 48 came out in the mid-late 1960s.
You really never know where you can stumble across a clue in a roadgeeking mystery.
I've updated the NEW PA 48 page at Gribblenation as a result:
https://www.gribblenation.org/2017/12/the-new-pa-48-unbuilt-eastern-allegheny.html
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Topic: SW Pennsylvania (Read 129867 times)