Today, Tuesday, November 24, SDOT will be making emergency repairs to an expansion joint on the southbound section of the Alaskan Way Viaduct, just past the First Ave. S exit.  This repair work will shut down the southbound lanes at various times today. From 11 a.m. to 12:30 p.m. the left and center lanes south of the First Ave. off-ramp will be closed, and from 12:30 p.m. to 2 p.m. the center and right lanes will be closed at the same location. Drivers are advised to proceed cautiously through the work zone, and expect slower travel times.