Here’s your warning; there will be lane closures and obstructions each day this week, from 9 a.m. to 3 p.m. so crews can install fiber optic cable. The work starts at City Hall and will move across the Monroe St. Bridge to Bridge Ave., then across Kendall Yards to College Ave., and up Maple St. to Indiana Ave., then down to the Fire Station on Ash St. Flaggers will be in place.