25 % 50% 75 % 5%
Ohio River Kanawha River Monongahela River Potomac River
The Venetian The Fairmont The Greenbrier The Peninsula
Gem State First State Mountain State Evergreen State
Rockies Appalachia Sierra Nevada Cascade Mountains
Royal Gorge Bridge New River Gorge Bridge Coronado Bridge Millau Bridge
800 000 8 million 18 million 1.8 million
Parkersburg Clarksburg Charleston Beckely
Interstate 64 Interstate 81 Interstate 70 Interstate 77
