Debera Carlton Harrell, WSDOT communications, 206-770-3554; 206-819-7230 (mobile)
SEATTLE – Drivers who use State Route 520 to reach Seattle should plan ahead for overnight closures of the floating bridge and highway on designated Tuesday and Thursday nights during the rest of September and into October.
The first of a series of night-time closures of the westbound SR 520 lanes will begin Thursday, Sept. 19. Westbound lanes will close from 92nd Avenue Northeast in Bellevue to Montlake Boulevard in Seattle. The overnight closures will ensure continued progress on the SR 520 bridge replacement, while keeping the highway open during the busy weekday commute and for weekend travel to cultural and sporting events.
During the closures, contractor crews working for the Washington State Department of Transportation will continue building new column foundations for the West Connection Bridge. Crews will deliver more than 25 truckloads of concrete per night – an estimated 260 cubic yards – to the west end of the existing SR 520 bridge. Workers will pump the concrete from the existing SR 520 roadway, across barges, and into column shafts positioned in Lake Washington.
The West Connection Bridge, scheduled for completion in summer 2014, will be a 1,330-foot-long, four-lane structure parallel to and north of the current floating bridge. The bridge is designed to connect the new floating bridge to the existing SR 520 highway while the remainder of the corridor is being replaced in Seattle.
Westbound-only closures: 92nd Avenue Northeast to Montlake Boulevard
To transition traffic before each closure, one of two westbound lanes will remain open from 9 p.m. to 11 p.m. After each night’s closure work, crews will re-open one lane to traffic at 5 a.m. Both westbound lanes will be opened by 6 a.m.
SR 520 ramp closures on the Eastside
Bellevue-area drivers should also be prepared for an overnight closure of the 92nd Avenue Northeast on-ramp to eastbound SR 520, from 9 p.m. Wednesday, Sept. 18, to 5 a.m. Thursday Sept. 19. Contractor crews working on the Eastside Transit and HOV Project will pour concrete for a new lidded overpass at that location.
WSDOT posts information about construction closures and nighttime work on the SR 520 Orange Page, the new interactive construction planning tool for the SR 520 program.