Why is I-5 so important for the traveling public?

I-5 is the main north-south highway moving people and goods and connecting cities and towns across the west coast of the United States from Mexico to Canada. In the Portland region, I-5 carries the highest number of vehicles in the state and is critical for businesses moving goods, commuters coming to and from Portland, and locals traveling within the region. With a high crash rate and significant traffic congestion, reliability on I-5 through the Portland region is degrading. Trips on I-5 are taking longer for everyone.