Crosstown traffic will be sluggish all weekend on Mercer Street, where workers will reduce the roadway to just one lane each direction.
The job is part of ongoing work to build a new Aurora Avenue North overpass above Mercer Street. The Seattle Department of Transportation is converting Mercer into a two-way boulevard to include trees, wide sidewalks, and bike lanes. The overall project is unlikely to improve car traffic, but will serve a booming population of apartment residents.
Lane closures are scheduled from 8 p.m. Friday until 5 a.m. Monday, between Dexter Avenue North and Fifth Avenue North. Also, part of Fifth will be reduced to one lane from Republican to Roy streets for paving, and Taylor Avenue North will be southbound only near Mercer Street. Wet weather could force the job to be rescheduled.
For several months, there have been two lanes each direction on Mercer during construction. The full boulevard will have three lanes each way — and SDOT says the third eastbound lane is to open in late November.
Also, an overnight closure of Interstate 5 between Highway 599 and the Boeing Access Road exit is planned Friday night, so Seattle City Light crews can replace a cable. Lanes will begin closing at 9 p.m. until the entire freeway is shut down at 11:59 p.m., until 6 a.m Saturday. Traffic will be detoured from I-5, as well as from nearby Highway 900 (Martin Luther King Way Jr. Way South) between south Seattle and Skyway.