Built in 1938 to provide access to the World's Fair that was held in Flushing Meadows the following year, the Bronx-Whitestone Bridge was the first direct link between Long Island and the mainland without going through another island. This suspension bridge connects Ferry Point Park in the Bronx with Whitestone in Queens and carries Interstate 678.
... one finds the "rolling" point, but the gyro will also be accelerated to a smaller extent by the slipping friction.
The device is covered by US patents 3,726,146 ...