(Portland, OR) -- Crews are working to make sure a water main that broke yesterday, resulting in flooding in downtown Portland, is repaired in time for this morning's commute. The 16-inch water main broke yesterday morning, and the subsequent flooding led to the shutdown of the Hawthorne Bridge. The span was reopened by 5:30 yesterday afternoon. Water Bureau officials say the water main broke at the site where construction of the new Multnomah County Courthouse is taking place. Water service in several nearby commercial buildings was affected, and several restaurants were closed.