The Hawthorne Bridge in Multnomah County, Oregon, will close entirely from 7 p.m. on Friday until 5 a.m. on Monday for ongoing pavement and repair work, with detours set up for pedestrians and cyclists. Meanwhile, in Pittsburgh, significant road closures are occurring next week, including the inbound Armstrong Tunnel from August 9 to 11 for cleaning as part of a $13.1 million rehabilitation project. Additionally, Route 51 in Mount Washington has closed for over three weeks starting August 1 for the demolition of a bridge, with extensive detours required for both cars and trucks. The Pennsylvania Department of Transportation has stated that the bridge is safe but needs removal due to high repair costs. Commuters in both regions are advised to plan for alternative routes and allow extra travel time during these closures. These roadworks reflect ongoing infrastructure improvements and maintenance efforts in both areas.