PORTLAND, Ore. -- Hawthorne Bridge has reopened in both directions after a water main break in downtown Portland flooded streets and closed the bridge on Sunday afternoon.

All access ramps are also open.

The break of a 16-inch main happened at Southwest Madison Street and Southwest 1st Avenue around midday Sunday, according to Portland Fire and Rescue.

Southwest 1st Avenue between Southwest Jefferson and Southwest Salmon streets which was closed is now open.

Southwest Main and Salmon streets also reopened Sunday evening.

Portland Fire reported the cause of the break was unknown and damage to nearby businesses was "minor." Five commercial buildings in the area have had their water service impacted because of the break. Building managers have been notified to assess any potential water damage to their basements.

KGW viewer Josue Morales recorded a short video while driving through the area.

The Portland Water Bureau said the cast iron main that broke was installed in 1958.

Photos: See images of the flooded streets after water main break

The Portland Water Bureau said some services in the area may have dirty water because sediment in the water mains has been agitated. The water should clear on its own in about two hours, but the bureau provided tips for people who have discolored water.

  • Use the water to flush toilets, but don't run it through filters, hot water heaters or washing machines.
  • Wait an hour, then run water from a tap for 5 minutes to see if it clears. Wait another hour and try again if the first attempt is unsuccesful. Once the water is clear, run water throughout the house to flush out any remaining sediment.