Alton has been narrowed in both directions during construction between to Barranca / Muirlands and Technology. There is a speed reduction, but the bike lane has been narrowed, contained within concrete barriers and the pavement is pretty rough; and as the travel lanes are wearing down, gravel & such is spreading into the bike lanes. Watch for vehicles turning right across your path of travel where the bike lane ends at Muirlands.
Bill Sellin