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I-90 Trail (Mountain to Sound Greenway Trail)


 This trail takes riders from the edge of Beacon Hill east across Lake Washington to Mercer Island and Bellevue on the edge of a floating bridge. Somewhat hilly, especially on Mercer Island. There is a long bike tunnel decorated with wall paintings going through the Mt. Baker Ridge. The eastern end of the trail snakes through a freeway cloverleaf and deposits the cyclist in Factoria. When crossing 23rd Ave westbound on the trail, if one heads right there is a spur trail that ends at Rainier Ave S near Hiawatha which is a good route to take to the bike lanes on Dearborn. If one turns left on 23rd Ave instead, the trail soon continues to your right, heading uphill to 12th Ave on Beacon Hill. A new branch heads around the corner southbound parallel to I-5, dropping you off on Holgate St.
This view of the Seattle skyline is near the western trailhead. Artwork reminds me of army tents…

Location: King County
City(s): Seattle, Bellevue, Mercer Island, WA
Length: 14.2 miles.  

Popularity:
 Somewhat
Elevation: Some hills (esp. on the Island)
     Gain 
     Loss
 
Facilities Trail Condition  
Drinking Water:  Yes
Restrooms:  Yes
Benches:  Yes
Picnic Tables:  Yes
Surface Type:  Paved
Surface Quality:  9
Scenery:  7
Lighting: 3
Ratings:

0 = none/ the worst
5 = average
10 = excellent


Maps:
Bellevue Bike Map
Channel 7 trail expansion rept
Downtown Seattle Bike Map
King County Bike Map
Mercer Island Lid Park VR
Mercer Island Parks Map
Missing Links trail map
Seattle end of trail
South Bellevue Trails Map
Taejon Park VR
Connections:
1. Connects to the Lake Washington Loop bike route in Bellevue and Seattle.
2. Comes within a few blocks of the 12th Ave bike lanes to Capitol Hill
3. Connects to Rainier Ave S/ Hiawatha for an alternate route to downtown via Dearborn St.
4. Connects to the Lake to Lake Trail in Bellevue

Expansions:
1. WSDOT is creating a multi-use trail on Beacon Hill that extends from where the existing Mountains-to-Sound Trail ends, at the Jose Rizal Bridge, moving west along the south side of I-90 and then south along I-5 to the Holgate Bridge. Trail section is now open.
2. Bellevue is creating a link from the eastern end of the trail near Factoria Blvd to 124th Ave SE.
 

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