Check out the latest road meet info for one near—your home
Real ID didn't exist until 2005.
There’s really not much to go on other than the tracks, which makes me think it may be an old footbridge around 30th st?
Did you try a reverse image search?
Based on this site, it looks like the 40th St. bridge:http://www.columbia.edu/cu/gsapp/BT/BSI/CABLE_ST/cable_st.html