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  • SE 1st Street - existing condition

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Project Highlights:

  • Improvements to an existing two-lane arterial, upgrading it to principal arterial standards
  • Federally-funded project
  • Project is being designed as a Complete Street for multi-modal transportation
  • Key features will include a roundabout, separated (protected) bike lanes, and a Dutch intersection
  • Performed a “design affirmation” to accumulate data from years past and refine the new concept
SE 1st Street - intersection design exhibit
SE 1st Street - proposed street cross section

Project Summary

Client: City of Vancouver
Location: Vancouver, WA
Services Provided:
  • Civil Engineering
  • Landscape Architecture
 
SE 1st Street is a busy arterial roadway, much of which is currently built similar to a two-lane rural road. As adjacent lands continue to develop, the need to improve the roadway becomes ever more important.
 
MacKay Sposito is currently designing improvements to SE 1st Street Improvements between SE 164th Avenue and SE 192nd Avenue. The project includes evaluation of alignment options, traffic engineering, signal designs, landscape designs, environmental process guidance and permits, and utility coordination. The project is federally-funded and is intended to address safety and congestion issues.
 
The project area can be divided into two distinct zones, with residential developments along the western half and existing and proposed commercial development along the eastern half.
 
To ensure the design of SE 1st Street meets the vision of the City, MacKay Sposito performed a “Design Affirmation” (DA) process. The intent of the DA process was to refine the design concept by reviewing the data accumulated by the City to date as well as new information collected during the initial stages of this project.
 
MacKay Sposito is working on a design that ensures SE 1st Street functions as a complete street accommodating multiple modes of transportation, thereby meeting the community’s needs today and in the future. Separated (protected) bike lanes will be a key project feature, as will a Dutch intersection to better protect non-vehicular users – the first of its kind in Vancouver.
 
Additionally, we are designing a roundabout for the primary intersection at SE 184th Avenue.