New Traffic Configuration of SR 99 and Mercer Street Now in Effect
SR 99 and Mercer street are open again after a weekend closure to complete work as part of the West Phase of the Mercer Corridor project. The closure was in preparation for demolishing the east half of the SR 99 bridge over Mercer Street and widening Mercer Street between Fifth Avenue North and Dexter Avenue North.
A new configuration of SR 99 and Mercer Street is now in effect and travelers can expect the following changes to the corridor:
- Mercer Street reduced to two eastbound lanes between Fourth Avenue North and Ninth Avenue North.
- Local access maintained at Taylor Avenue North.
- The sidewalk on the north side of Mercer Street is closed between Fifth Avenue North and Dexter Avenue North. The sidewalk on the south side of Mercer Street will remain open.
- Broad Street open to two-way traffic.
- SR 99 traffic shifted to the west side of the roadway between Valley and Harrison streets. Two lanes of SR 99 in each direction will remain open.
- The northbound SR 99 off-ramp to Mercer Street is permanently closed. A new signalized intersection at Republican Street and Dexter Avenue North is available for northbound SR 99 traffic to reach South Lake Union.
Lane reductions on Mercer Street will continue throughout the West Phase of the Mercer Corridor Project, which is anticipated to be completed in mid-2015. Construction of this $95 million project will take approximately 2.5 years.