The Mackinac Bridge is five miles long and crosses the Straits of Mackinac, connecting the upper and lower peninsulas of Michigan. It is the longest suspension bridge in North America.
Definition of plinth. 1a : the lowest member of a base : subbaseb : a block upon which the moldings of an architrave or trim are stopped at the bottom. 2 : a usually square block serving as a base; broadly : any of various bases or lower parts.
If a building has columns, you can call the platform or base on which a column rests a plinth. The plinth typically lies between the column and the ground. In architecture, a plinth is one of the basic building elements. While it's most common for a plinth to support a pillar or column, it can also be used as a base or slab underneath a statue, a bust, or a decorative vase, and in engineering a plinth is the support for a dam.