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SR 520 Bridge Program: Medina to SR 202 Eastside Project What's happening now

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Updated: June 2015

Current construction info:

Please visit the SR 520 Orange Page for up-to-date lane and ramp closure information.

Check out our December construction activities map ! (pdf 643 kb)

Key construction impacts

Project timeline

In 2014, crews expect to complete three highway lids, two transit stations and the final SR 520 roadway alignment.

Inside HOV lanes open

New inside HOV lanes between Lake Washington and 108th Avenue Northeast opened on Sept. 15. Corridor users are already receiving a benefit, as buses and carpools continuing on SR 520 through the Eastside are now able to bypass congestion that occurs in the general-purpose lanes. This benefit is enhanced by the fact that the transit/HOV lane is located in the inside lane, eliminating conflicts between general-purpose drivers merging into the outside lane, and eliminating the need for buses to merge across traffic when accessing the transit stops.

The existing outside HOV lanes east of I-405 will remain in place until traffic patterns and transportation planning efforts show a change is needed.

The Eastside SR 520 HOV lane operates as follows:

  • West of I-405: Buses and carpools travel in the inside lane, with a 3-person minimum occupancy requirement for carpools – the same occupancy requirement as before project construction.
  • East of I-405: Operations remain the same. Buses and carpools will travel in the outside lane, with a 2-person minimum occupancy requirement for carpools.

Two new Eastside median transit stops now open

The Evergreen Point Road median stop opened Monday, June 16, and was followed on July 14 by the opening of the 92nd Avenue Northeast stop. Following the opening of the SR 520 HOV lanes, busses are now able to move more efficiently into and out of the transit stops.

84th Avenue Northeast roundabout, new ramps now open

Crews opened the 84th Avenue Northeast roundabout to traffic on Monday, June 16. The reconstructed interchange's on- and off-ramps to SR 520 also opened. Check this link for a view (pdf 4.5 mb) of the new roundabout and interchange ramps.


Planting has begun throughout the project corridor and will continue through the completion of the project. After project construction is complete, you may still see crews maintaining project landscaping for the next three years to ensure plant growth. Crews began planting near Bellevue Way last fall, including installing nearly 20 raptor perches to encourage habitat development (read all about it on the WSDOT Blog ). Crews have already planted trees, shrubs and grass on the Evergreen Point Road lid and are moving east through the corridor.

Regional bicycle and pedestrian path

Crews continue to build the bicycle and pedestrian path on the north side of SR 520 between Evergreen Point Road and 108th Avenue Northeast. Because the path currently provides crews access to the construction zone, it will be one of the last features to open to the public later this year.

92nd Avenue Northeast roundabout and pedestrian tunnel construction continues

Crews opened the 92nd Avenue Northeast roundabout to traffic in September. Crews are currently placing the finishing touches on the lid and transit stop by adding landscaping and waterproofing in the area. The 92nd Avenue Northeast median transit stop opened July 14.

Bellevue Way overpass opened to traffic this spring, construction continues

Bellevue Way overpass construction will continue into fall 2014. Crews opened a new left-turn lane from northbound Bellevue Way to the on-ramp to westbound SR 520 in the spring. When complete, the improved bridge (pdf 725 kb) will provide additional capacity, including two through lanes in both directions on Bellevue Way, two left-turn lanes on Northup Way, and double left-turn lanes off northbound Bellevue Way onto SR 520 (with longer left-turn lanes to help separate traffic headed onto SR 520 from traffic continuing on Bellevue Way. Additionally, a pedestrian and bicycle path will open along the east side of Bellevue Way following the completion of the overpass.

Eastside HOV lane configuration with project completion

Traffic Revision: 108th Avenue Northeast on-ramp to westbound SR 520

Since May 30, 2012, there have been changes at the 108th Avenue Northeast on-ramp to westbound SR 520. In September 2014, crews opened the on-ramp in its final configuration. Here are the details:

Northbound 108th Avenue Northeast to westbound SR 520:

  • Access is maintained for transit and 3+ carpools using the direct-access HOV on-ramp.
  • Single-occupant vehicles and two-person carpools may access westbound SR 520 at Bellevue Way, via Northup Way.

Southbound 108th Avenue Northeast to westbound SR 520:

  • Southbound drivers on 108th Avenue Northeast may access westbound SR 520 at 108th Avenue Northeast.
  • Access is maintained for transit and 3+ carpools using the direct-access HOV on-ramp.

This change was made for construction of the new on-ramp and a fish-friendly culvert underneath 108th Avenue Northeast. When complete, the new 108th Avenue Northeast interchange will include direct-access ramps for buses and carpools traveling in both directions on 108th Avenue Northeast.

Points Loop Trail detour

The Points Loop Trail is closed between Evergreen Point Road and 84th Avenue Northeast while crews construct project improvements. Bicyclists and pedestrians are to use the detours to Northeast 28th Street and Northeast Points Drive. A section of the reconstructed Points Loop Trail opened in fall 2013 between 84th Avenue Northeast and 92nd Avenue Northeast.