Project Name and Location:
No. 7 Subway Line Extension
Manhattan, New York

Client:
Parsons Brinckerhoff Quade & Douglas, Inc.
2 Broadway, 5th Floor
Mailbox B.5.135
New York, NY  10004

Contact:
John Chirco, P.E.
(646) 252-4077

MTA / New York City Transit is planning to extend the No. 7 Line Subway services to the area
known as Far West Midtown Manhattan.  This strategically located area will allow for the
expansion of the Midtown Manhattan Central Business District, which will in turn, sustain the city’
s economic growth and global competitiveness over the next 20 to 25 years.  

RAS obtained low-altitude mapping photography (LAMP) at 1”=100’ scale to produce
topographic basemapping at 1”=20’ scale with one-foot contour intervals in Micro Station
format.  Highly accurate photogrametric base mapping was produced for the entire 3-mile
project.  A digital terrain model (DTM) was developed from the aerial mapping data for utilization
by the PBQ&D design team.