Greenroads Certified Bronze

SR 527 Multiway Boulevard - Phase 2

 

Summary

Engineers Estimate: $10.1 mlilion 

Bid Price: $9.0 million

Length: 0.34 miles

Funders/Stakeholders: City of Bothell, Transportation Improvement Board 

Owner: City of Bothell

Lead Design: Perteet, Inc. 

Design Support: HBB

Contractor: Interwest Construction Co. 

Functional Class: Local

Greenroads Version: v2     

Description

The Multiway Boulevard Project is a complete transformation of SR 527 in downtown Bothell, Washington to a boulevard style street incorporating median-separated local access traffic lanes with bicycle and parking access in addition to central primary travel lanes. Phase 2 of the Project completed improvements from SR 522 to NE 188th St, building on the Phase 1 work that focused on the west side of the roadway. The Project serves to revitalize the downtown corridor of Bothell, making the space accessible to all modes and users while simultaneously updating utilities, managing stormwater, and providing extensive landscaping. 

Features

Sustainability features of the new boulevard center around the numerous amenities for cyclists and pedestrians, and the transformation of this vital corridor. The Project also incorporated a number of responsible construction practices, and took steps to reduce the impact of the roadway during its operational phase. Specific highlights include:

  • New 14'-wide sidewalks
  • Median separated frontage roads for local access, parking, and bicycles
  • User amenities such as bike racks and benches 
  • Energy efficient LED fixtures with zero uplight
  • Several-fold increase in expected tree canopy 
  • Asphalt pavement in primary travel lanes designed for 40-year life
  • Stormwater management through rain gardens, permeable pavers, and underground treatment gallery

 

Multiway Phase 2 - Local Access Roads

Multiway Phase 2 - Rain Gardens

Multiway Phase 2 - SR 522 Intersection

Multiway Phase 2 - Access Road Construction

Multiway Phase 2 - Drainage Construction