Portland drivers are facing significant disruptions as the I-5 southbound closure begins through the Rose Quarter for up to five weeks. The first Monday morning commute since the closure took effect is expected to be chaotic, with authorities warning of major delays and urging motorists to allow extra travel time. As thousands navigate the altered routes, the city and ODOT are implementing measures to manage side-street traffic and promote public transit alternatives. With heightened congestion anticipated, drivers are advised to familiarize themselves with detours to avoid backups expected during this extensive construction period.