Known as centenary poles, they are integral to powering The Tide because they hold up the wires that carry electricity to the rail cars. Unlike subway cars that have a "third rail" electrified track, The Tide's power comes from above, meaning it's safely away from everyone who will board the trains.
The poles are part of a contract to install electrical components along the alignment, including grade-crossing signals, crossing gates and seven electrical substations that convert alternating current to the direct current required to run the trains. The poles are made of galvanized steel and were built in Pittsburgh. Those installed at Harbor Park and running to the medical center will be painted black. The system will be energized next year.