I-90 Trail Upgrades Must Meet or Exceed Regional Standards
Bike rests against a rail overlooking the I-90 bridge

Future-proofing our trails starts with building for today – and tomorrow’s – users. You can help make sure that the I-90 Trail continues to feel like the regionally significant trail that it is. Join us at Monday night’s Open House at the Mercer Island Community Center to share how you use the I-90 Trail.

The I-90 / Mountains to Sound Greenway Trail knits the Seattle metro area together, as an east-west spine for people walking, biking, and rolling. Today, the trail connects Seattle to Bellevue and Mercer Island, across Lake Washington; in the future, the trail will be part of a continuous trails network from Alki Beach all the way to Snoqualmie Pass, and on to eastern Washington on the Palouse to Cascades Trail.

Passing through multiple communities, the trail’s fate as a cross-state gem is in the hands of multiple jurisdictions. Mercer Island is one such community. Though most of the right of way is owned by WSDOT, the Aubrey Davis Park Master Plan sets standards for I-90 trail management by the City of Mercer Island.

With long-term planning underway that affects the I-90 Trail across Mercer Island, people who bike need to speak up now to make sure it continues to feel like the regionally significant trail that it is. RSVP to attend the open house.

Futureproofing the I-90 trail

With projected growth of 1.8 million people in the next 30 years, it’s crucial for all parts of the I-90 Trail to allow for increased capacity. This means we’re asking the City of Mercer Island to:

  • Right-size the I-90 Trail to fit local and national design standards, so that users experience a seamless trails network across jurisdictions. As national trails standards grow to 14 feet wide, King County is already building well-loved trails to 14 feet to give all users room to safely navigate.

  • Make sure this high-use section of trail supports more people (using more modes) to get around the regional trails network.

  • Support transit access and through-traffic on the trail as East Link Light Rail and increased bus service come online near the trail’s corridor.

Now’s the time to contribute to the future vision for the trail. On Monday, September 23, from 6 - 8 pm at the Mercer Island Community Center the city is hosting the third and last open house to get feedback on the draft Aubrey Davis Park Master Plan. Tell us you’ll make it!


By signing up, you’ll be the first to know about next steps.


Claire Martini's picture
Claire Martini