The I-5 southbound through Portland is closed for up to five weeks, starting this week. This shutdown, which affects the section between I-405 and I-84, coincides with a large concert event, leading to significant concerns about traffic disruptions. Officials, including ODOT, are urging drivers to allow extra travel time and consider alternative routes, as the closure is expected to cause major delays and impact events in the area. Public safety challenges and increased side-street traffic are anticipated, with local businesses and commuters bracing for the chaotic conditions. Authorities are installing new traffic cameras and staging tow trucks to mitigate potential issues. Commuters from nearby areas, especially Washington, may experience the most significant effects from this unprecedented closure.