Port Authority's Library line will be closed south of Washington Junction for most of the day today and Sunday during tree-trimming along the right-of-way.
The closure and detour will begin with start of service and end at approximately 4 p.m. both days. The work requires power to be turned off along the affected portion of the line.
Blue Line-Library service will serve its normal stops between the North Shore and Washington Junction, then detour to South Hills Village. T stops on the closed section will be served by bus shuttles operating in both directions between Washington Junction and Library Station.