- bridge-tun|nel
- bridge-tun|nel «BRIHJ TUHN uhl», noun.a causeway consisting of several bridges and underwater tunnels, designed to carry automobile, truck, and train traffic across a large body of water: »
A bridge-tunnel [to] span the Chesapeake Bay…allowing tourists to drive more than 17 miles across one of the world's greatest estuaries (Science News Letter).
Useful english dictionary. 2012.