PUEBLO — Work is under way this week to give one of Colorado's oldest freeways an overhaul. The Pueblo Chieftain reports (http://bit.ly/1Ivs31M) Colorado Department of Transportation officials say the Pueblo section of Interstate 25 hasn't had a single upgrade since it was built in the 1950s. Pueblo County Commissioner Liane McFadyen estimated it would cost about $88 million to widen the road, fix bridges and make a series of other changes. Discussions for a plan to improve the freeway have been ongoing since 2000.