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.
Definition of turf for English Language Learners. : 1  the upper layer of ground that is made up of grass and plant roots. : 2  a square piece of turf cut out of the ground that is used for making lawns. : 3  a material that looks like grass and that is used especially to cover athletic fields.