SR 542 - SR 9 East Junction - Intersection Improvements - Complete October 2018

Project news

Following community feedback and speed and crash analysis, WSDOT engineers determined a roundabout was the most effective solution to improve safety at this intersection. The roundabout will lower speeds of travelers on SR 542 allowing SR 9 drivers to safely enter the intersection and turn left on SR 542 while keeping traffic moving - improving safety and reducing severe crashes. In 2018, WSDOT contractor crews from Colacurcio Brothers built this roundabout.

The End Result

This project increases safety for travelers by:

  • The speed of east and west bound drivers to improve turning safety from SR 9 to SR 542.
  • Severe collisions.
  • The number of injury crashes, supporting Washington's strategic highway Target Zero plan.

This intersection improvement project is now helping move Mount Baker Highway neighbors and visitors safely and efficiently through this stretch of highway.


This project cost $1.4 million.


Northwest Region Communications