Portal:U.S. roads/Did you know/January 2011

... that the Albuquerque Metropolitan Arroyo Flood Control Authority has installed a tumbleweed snowman (pictured) at the Big I interchange every year since 1995?
... that Interstate 335 was designated in 1987 to allow a portion of the Kansas Turnpike to raise the speed limit to 65 mph (105 km/h) in compliance with a change in the National Maximum Speed Law?
... that the interchange between Interstate 476 and U.S. Route 30 in Radnor Township, Pennsylvania contains a large crushed-stone image of a griffin to commemorate Radnor's history as part of the Welsh Tract?
... that most of U.S. Route 2 in Vermont was originally part of the Theodore Roosevelt International Highway, an early transcontinental North American auto trail?
... that construction of Interstate 140 outside Wilmington, North Carolina was delayed in part to redesign an off-ramp to avoid a 450-year-old oak?