Portal:U.S. roads/Did you know/August 2013

... that the Terwilliger curves (pictured), a six-lane section of Interstate 5 in Portland, Oregon, had an average of 100 car accidents per year between 1995 and 2005?
... that unlike elsewhere in the United States, traffic on highways in the United States Virgin Islands drives on the left?
... that New Hampshire Route 113B is a suffixed route of Maine State Route 113, and it comes nowhere near its implied parent, New Hampshire Route 113?
... that though it only contains 4% of the nation's roads, America's National Highway System carries more than 40% of all highway traffic and 90% of tourist traffic?
... that although the New Jersey Route 85 freeway was never built, it is still listed in the state's Route Log?