SR 501 - I-5 to Port of Vancouver - Intersection and Profile Improvements

Project news

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Needs & benefits

Why is WSDOT making corridor modifications on Mill Plain Boulevard (SR 501) between the Port of Vancouver and I-5?

Oversized freight traffic must divert from this section of SR 501 onto city streets due to curves in the roadway and limited overhead clearances.

This project will remove high points in the roadway, reconstruct traffic signals to improve mobility for large freight vehicles and increase safety along the corridor for all modes of transportation.

Design considerations for this project will assess pedestrian and bicycle mobility improvements on Mill Plain Boulevard.

Public Involvement 
Your input in the design and construction process is important to us. Public involvement activities, open houses and hearings will be held to provide opportunities for public input.

The End Result
Corridor modifications will help keep traffic and freight moving through this vital stretch of roadway.

Project Benefits

  • Mobility - Decreased freight traffic on downtown Vancouver streets.
  • Safety - Reduce the likelihood of collisions between freight traffic and local traffic on city streets.
  • Economic - Meet the needs of future area development.


2016: Preliminary public outreach and design work began.


Financial Data for PIN 450119A
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $0
Pre-Existing Funds (PEF) $0
CWA $7,000
Total $7,000


Susan Fell
WSDOT Clark County Area Engineering Office

Tamara Greenwell
WSODT Communications

SR_501-I-5 Port of Vancouver