TxDOT reports that sign work will require lane closures Monday night on the Harbor Bridge. The installation of a new overhead sign directing motorist to North Beach will require the closure of two lanes on the Harbor Bridge. Crews are expected to close the two, northbound right lanes from 9p.m. to 6a.m. The work will also require the closure of all northbound ramps from downtown Corpus Christi. Use caution and follow detours.