Projects > East/Central Corridor
Residents of east and central
have called for solutions to clogged highways and aging bridges, as well as a light-rail connection across King County . Lake Washington
Traffic chokepoints and congestion on the Eastside and in the downtown
core make it tough to move people and goods through the region. Right now, there is no east Seattle connection to the regionís emerging light-rail system. Rush hour backups on I-405, I-5, and SR 520 as well as other regional roads affect the region's mobility, economic prosperity and quality of life. King County
The Roads & Transit proposal seeks to tackle the East-Central corridor's major traffic chokepoints and connect the busiest population and job centers through road and transit investments. The plan would:
improve the I-405 corridor with expanded lanes
rebuild the SR 520 bridge with six lanes including two new HOV lanes
address I-5 congestion at several
provide light rail 20 hours a day, every few minutes during peak commuter hours, between
, Seattle and Overlake/Microsoft across I-90 Bellevue
build thousands of new Park and Ride slots
The projects proposed for the East/Central corridor, and the benefits they provide, are described below.
The Roads & Transit plan, developed with input from thousands of citizens, civic leaders, and communities, and years of engineering and design work, is our opportunity to do things differently, on a scale that matches the traffic problems we face.
What is proposed for the East/Central Corridor?
Proposed transit investments
Light Rail: Extends light rail between
, downtown Seattle and Bellevue ís Overlake area. Connects regionís largest population and employment centers with light rail: downtown Redmond to downtown Bellevue in 20 minutes, and Overlake/Microsoft to Seattle in 10 minutes. Bellevue
Future Light Rail to Downtown Redmond: Funds additional real estate acquisition, design and engineering to extend light rail to
in this phase and possible construction if funding and cost savings occur. Redmond
Direct-Access Bus Ramp I-5 to
: Provides a transit-only ramp at I-5 northbound and South Industrial Way which links directly to the South Industrial Way busway that takes buses into downtown 5th Ave S . This new connection will reduce the delays that currently occur when buses weave across I-5 to exit at Seattle . South Spokane Street
Car in First Hill Street : Develops a street car service between one of the regionís largest employment centers (First Hill) to the Capitol Hill light-rail station and downtown Seattle . Seattle
Renton Express Bus North 8th Street Parking Garage: Adds to east
ís I-405 Bus Rapid Transit network, providing easier connections to transit. King County
and Parking Garage: Adds to I-405 Bus Rapid Transit network with a transit center/Park & Ride near SR 527/Bothell Way Northeast and Bothell Transit Center in downtown Bothell. Northeast 185th Street
I-90/Issaquah Future High Capacity Transit Planning Study: Begins work for future eastside transit possibilities.
SR 520 Future High Capacity Transit Planning Study: Explores future cross-lake transit possibilities to further expand access to fast, reliable transit options
Proposed road investments
SR 520 Bridge and HOV Lane Project: Provides regional funds toward replacing the earthquake- and windstorm-vulnerable crossing with a new six-lane bridge that increases capacity and adds HOV lanes, shoulders and bicycle lanes in each direction. Identifies full funding strategy for entire SR 520 corridor from I-5 to I-405.
I-405 Bellevue to Renton Project: Builds a new elevated braided ramp to separate traffic on southbound I-405 between SR 520 and
in NE 8th Street and constructs new access to Bellevue . Constructs an additional northbound lane from I-90 to downtown NE 10th Street . Adds two new lanes in each direction between Bellevue and Renton . Constructs a new HOV direct access ramp at Bellevue in N 8th Street and adds bicycle and pedestrian paths near Renton and the Wilburton tunnel. Coal Creek Parkway
East Sammamish Plateau Access Project: Constructs northern missing link and retrofits existing portions of roadway to provide needed capacity and congestion relief on north end of Sammamish plateau. Would include curbs, gutters, sidewalks, bicycle lanes, street lighting, storm drainage, landscaping.
SR 167/I-405 Interchange HOV to HOV Direct Connection Project: Provides direct HOV-to-HOV connection between SR 167 and I-405 to reduce weaving and backups for both northbound and southbound traffic at the most congested interchange in the state. Connects I-405 to SR 167 for future HOT (High Occupancy Toll) lanes.
Mobility Project, SR 99 to I-5: Seattle
widening: Widens Mercer St to add three westbound lanes between I-5 ramps and Mercer Street to reduce backups. Converts Mercer St from one-way to two-way street with turn lanes. Improves connections for pedestrians and bicycles. Dexter Ave
Lander Street Improvements: Builds overpass above BNSF train tracks between
and 1st Avenue South to increase traffic flow for trains, cars, trucks, bicycles and pedestrians. 4th Avenue South
I-5/Spokane Street Viaduct: Increases capacity by widening viaduct structure, adding one lane between I-5 and
, building transit-only lanes and an off-ramp at 1st Avenue South . Adds shoulders and installs a permanent median barrier. Improves safety, freight mobility and traffic flow on the major east/west connection between I-5 and SR 99, 4th Avenue South and of Port Seattle . West Seattle
Replacement Project: Replaces earthquake-vulnerable bridge that, without improvement, is slated to be closed in 2010. Improves freight mobility for South Park Bridge and manufacturing centers in south of Port Seattle . Seattle