Northside Boulevard Interchange at Interstate 84 will fully open on Sunday morning (May 9)

Northside SPUI nearly complete

The Northside Boulevard interchange will be fully opened to motorists on Sunday morning, May 9 at 6 a.m. ITD began construction on the interchange in July 2019 and will reopen on schedule.

The Northside Boulevard Interchange has been replaced with a Single-Point Urban Interchange or SPUI design to accommodate more traffic and reduce delays.

The new SPUI interchange includes:

  • A central traffic signal underneath I-84 that will direct all turning movements from a single point.
  • New sidewalks and bicycle lanes added to both sides of Northside Boulevard.
  • Flattened on- and off-ramps to improve visibility for vehicles accessing I-84.
  • New ADA curb ramps at the intersection of 6th Street and Northside Boulevard.

features of the new Northside SPUI

ITD will open the new lanes of I-84 between Karcher Interchange and Franklin Boulevard on Tuesday morning, May 11. Motorists will have three lanes in each direction and a new auxiliary lane between the ramps.

“ITD would like to thank the community for their patience during the construction of this important project,” said Mark Campbell, ITD Project Manager. “Heads up, there are still final cleanup activities in the area over the next few weeks as construction crews finish the project. We ask motorists to continue to slow down and pay attention in the work zone.”

To request text message updates about other major traffic impacts on I-84 in Canyon County, text 84CORRIDOR to 1-866-ITD-84CC. For details about the I-84 expansion in Canyon County, visit or listen to the monthly Drive Idaho podcast.