After nearly three decades of complaints from confused motorists, the Interstate 19 kilometer markers will soon be pulled out of the ground for good. The state transportation board on Tuesday approved $1.5 million to replace the signs on the entire 100-kilometer — or 63-mile — stretch of I-19 from Nogales to Tucson. The funding is part of the federal stimulus package, which provides $521 million to the state for roads and bridges. [SNIP] The interstate starts at the U.S.-Mexico border and is part of the Canamex corridor intended to link Mexico, the U.S. and Canada along a trade route. For...