Drivers and bus riders, be warned: Highway 99 in central Seattle, including the Alaskan Way Viaduct, will close all weekend for construction near each end. Afternoon congestion is likely to increase on Interstate 5.
Northbound lanes of Highway 99 will close from South Spokane Street to Valley Street.
Southbound lanes will close from the Battery Street Tunnel to South Spokane Street.
And southbound traffic will be reduced to one lane from south Queen Anne Hill to the Denny Way exit.
All three restrictions last from 10 p.m. Friday until 5 a.m. Monday.
Workers in Sodo will be removing steel and timber beams, exposing the concrete shape of a new overpass — known as “little h” — that will help trucks get from the stadium area to waterfront Terminal 46.
To the north, city contractors will install an east-west sewer line alongside the new Mercer Street West underpass, and grind pavement in the southbound lanes of the Battery Street Tunnel.