Gentlemen!
As I see my website was referenced (thank you for a kind words!), I can add the following:
The Website only covers "Offline" Terminal operations & float bridges. Meaning, if it wasn't connected to the mainland rail network, and access to that facility was by car float only, I cover it. Online terminals I left for other historians. As it turns out, there are more rail marine locations in the Bronx than the four terminals I cover and that had carfloat operations (and likewise operation of a float bridge). From north to south:
The Bronx Terminal Market "BTM", was served by New York Central Highbridge Line and therefore an online terminal.
The Bronx Terminal Market was owned by the City of New York, but rail service provided by New York Central. The float bridge could accept carfloat traffic from any of the railroads offering carfloat service in New York Harbor that had to expedited, but traffic destined for the Bronx Terminal Market was Car Load only, no LCL. Rail traffic appears to have been in similar operation as for the Brooklyn Wallabout Market: Wholesalers would contract with their railroad for through delivery of their carloads. Only difference between BTM and the Wallabout Market was Wallabout was Pier Station delivery only (until BEDT opened their float bridge on Clinton Avenue in 1935)
As the BTM was connected to Hudson Line, Mott Haven Yard, and likewise New York New Haven & Hartford via Melrose Junction, freight (perishables for the market) were brought in primarily via the overland routes. The float bridge appears to have built for redundacy.
But please keep in mind, I am by far no expert on New York Central float bridge operations. The one to ask would be Thomas Flagg and if he can't answer you, he will direct you to someone who can. If you need his email, contact me via personal message and I'll reply with his email.
FYI: the float bridge at Bronx Terminal Market, was a French Patent, or "Electrically Operated, Overhead Suspension Contained Apron" type. It was built in 1925 but did not get activated until 1935 and was used until ca. 1975.
Continuing southeast, the other rail-marine locations located in the Bronx were:
Erie "Harlem Station" (offline) @ 149th Street
Lehigh Valley "Bronx Terminal" (offline) @ 149th Street
DLW / Erie / B&O "Harlem Transfer" (offline) @ Park Avenue / 135th Street
Central of New Jersey "Bronx Terminal" (offline) @ Third Avenue
New York New Haven & Hartford "Harlem River Yard" (online)
(Having reached the South Bronx we are heading north now)
New York New Haven & Hartford "Oak Point" (online)
The NYNH&H "Hell Gate Yard" and NYC'l "Port Morris Yard" did not have float bridges.
Specs, types and dates of service for
all float bridges located throughout NY Harbor (regardless of type of service: online or oflline) can be read on one the newest pages to be added to the website:
http://members.trainweb.com/bedt/indloc ... rlist.html
I'm sorry I couldn't be more help on in regards to BTM, but I had to 'draw the line' somewhere in regards to my research & coverage, and chose not to cover the Online Terminals in NY those being BTM, NYNH&H Oak Point, NYC'l 60th Street, NYC'l 33rd Street, LIRR LIC and NYNH&H / LIRR Bay Ridge - 65th St).
All the best!
Philip M. Goldstein
historian of: Industrial / Offline Terminal Railroad's of Brooklyn, Queens, Staten Island, Bronx & Manhattan
http://www.freightrrofnyc.info