Y-Bridge

A multi-way bridge is a bridge with three or more distinct and separate spans, where one end of each span meets at a common point near the centre of the bridge.  Unlike other bridges which have two entry-exit points, multi-way bridges have three or more entry-exit points.  For this reason, multi-way bridges are not to be confused with commonly found road bridges which carry vehicles in one direction from one entry point, and then bifurcate into two other one-way bridges.Multi-way bridges are located throughout the world, though they are rare. Some are as small as a footbridge, while others are multi-lane roadways.
Three-way bridges are often referred to as "T-bridges" or "Y-bridges", due to their shape when viewed from above.  Three cities in Michigan each have a three-way bridge named "Tridge", combining "tri" and "bridge" : The Tridge (Midland, Michigan), The Tridge (Ypsilanti, Michigan) and The Tridge in Brighton, Michigan.
The unique shape of a multi-way bridge makes it easy to identify from an airplane.  Pilot Amelia Earhart described Zanesville, Ohio as "the most recognizable city in the country" because of its Y-shaped bridge, and the pilots of Enola Gay aimed for Hiroshima's T-shaped Aioi Bridge when they dropped the atom bomb.
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