Alignment

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Contents

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[edit] Notes

As the Triboro RX is a re-purposing of an existing right-of-way, the choice of route is naturally rather limited. Its alignment is designed with the primary goal of maximizing connections to the current subway system. Beyond that, stations are placed as close to one half mile apart as possible, in areas of residential or commercial concentration.

[edit] Transfers

A handful of issues remain, primarily around the connections (or lack thereof) between and the Triboro RX and other lines. There is no planned connection to the R train in Bay Ridge, which crosses the Triboro RX tracks at 65th st. Similarly, no transfer has been planned to the 5 train in the Bronx. In both cases, the closest existing station is over .2 miles from the intersection with the Triboro RX. As a point of reference, two transfers that approach many commuters' limits of convenience, between the A/C/E and 1/2/3 at Times Square and between the 1/2/3 and F/V/L at 14th street, are .17 miles each. Further research may very well show that the benefit of transfers between the Triboro RX and the R and 5 are worth the extended walk.

In two places the Triboro RX runs essentially parallel to another line and has a number of consecutive connections, which may prove to be superfluous. On the N in Sunset Park the lines run right next to each other, and the stop at 8th Avenue is very close to the one at Ft. Hamilton Parkway. In Eastern Brooklyn, the Triboro RX runs in a cut where the L is elevated. In the former case, the ease of transfers between the two lines could obviate the need for one of the Triboro RX stations, though they are probably easy to construct within the existing stations. In the latter, it is harder to transfer so the sister stations may be necessary, but would of course be more costly to build.

[edit] New Rights of Way

This study assumes much about the development of tracks, stations, and infrastructure needed to create circumferential transit service following the general path of existing rights of way. Much of this development would be in the form of upgrades and renovation, but some brand new construction would be needed. This includes connecting the end of the St. Mary's Tunnel at 161st street in the Bronx over to Yankee Stadium. Whether this is a tunnel, elevated structure, or built at grade is irrelevant for the sake of estimating demand for the service.

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