LA CONNER, Wash. -

A Skagit County bridge in northwest Washington has reopened after being closed for several hours after someone reported hearing a noise and seeing falling debris.

County Public Works Director Dan Berentson said Thursday night that a state Transportation Department inspection team checked the Rainbow Bridge and found no damage.

The bridge across the Swinomish Channel links the town of La Conner and the Swinomish Reservation.

Earlier in the day, a tipster reported seeing an object - possibly a piece of concrete - fall from the bottom of the structure and into the channel.

Skagit County owns the arch bridge, which is painted red, unlike other typical green road bridges in Washington.

A section of an Interstate 5 bridge over the Skagit River fell into the water on May 23, 2013, after a truck carrying a tall load hit the bridge in Mount Vernon, about 60 miles north of Seattle. Two other vehicles fell into the river; three people were rescued with minor injuries.