Philadelphia Roosevelt Blvd Subway

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Re: Philadelphia Roosevelt Blvd Subway

Postby SCB2525 » Wed Mar 29, 2017 5:35 pm

The MFL does not have the capacity to allow an extension appreciably far up the Boulevard, though the plan always was to extend it TO the Boulevard to meet a BSL extension. The BSL was designed to a much higher standard with 4 tracks specifically to accommodate (several) extensions. You would only need to tunnel from the end of the ramps north of Erie to some portal of a location as yet determined (I don't know if planning ever got that far).
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Re: Philadelphia Roosevelt Blvd Subway

Postby jonnhrr » Fri Apr 07, 2017 2:15 pm

ex Budd man wrote:It would be cheaper to built an elevated extension of the M-F line to Roosevelt Blvd. than to tunnel from Broad Street. Tunneling has too many potential obstacles; countless underground utilities and three circles come to mind. Built it on the median with access from the side walks. Run it all the way to Neshaminy Mall. That might lighten the traffic on the West Trenton line.


Nowadays with TBM's tunneling is not as disruptive as it used to be with cut and cover construction. Still expensive though.

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Re: Philadelphia Roosevelt Blvd Subway

Postby SEPTA2461 » Sat Apr 08, 2017 3:33 pm

Just as a memory refresher, was the ramp from the never-to-be Northeast Extension, along with the Olney ramp, built along with the rest of the line in 1928?
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Re: Philadelphia Roosevelt Blvd Subway

Postby SEPTA2461 » Tue Apr 18, 2017 4:40 pm

ex Budd man wrote:It would be cheaper to built an elevated extension of the M-F line to Roosevelt Blvd. than to tunnel from Broad Street. Tunneling has too many potential obstacles; countless underground utilities and three circles come to mind. Built it on the median with access from the side walks. Run it all the way to Neshaminy Mall. That might lighten the traffic on the West Trenton line.

I thought the plan was to build it under the Pennway power line.
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