Pictures 3 Thames River Railroad Bridge - Groton Bridge, New London Connecticut Tweet 1978 LOOKING WEST, SHOWING DETAIL OF HEEL TRUNNION 1978 BEVEL AND SPUR GEARS, BRIDGE RAISING MECHANISM 1978 BRIDGE RAISING MECHANISM 1978 RAILS AND LOCK MECHANISM 1978 LOOKING WEST, SHOWING BRIDGE MACHINERY HOUSE ON FIXED SPAN 1978 INTERIOR, OPERATOR'S HOUSE