A woman with a loaded shotgun briefly shut down traffic Thursday morning on the Penobscot Narrows Bridge, authorities said.

Police began getting calls from motorists on the bridge around 10:30 a.m. to report that a woman had walked from the Prospect side and was sitting on the railing, holding a 12-gauge shotgun, Maine Public Information Officer Steve McCausland said.

Maine State Police and Bucksport police arrived just before 11 a.m. and shut traffic down on the bridge, which connects Verona Island with Prospect. Officers communicated with the 54-year-old woman, whose identity is being withheld, using a loudspeaker for about 20 minutes. The woman eventually lowered her weapon and agreed to be taken into protective custody.

There was “no indication she was threatening anyone other than herself,” McCausland said, who added that police will not likely press charges.

“At this point, our priority is getting her the care that she needs,” McCausland said.

The woman was taken to Eastern Maine Medical Center in Bangor for evaluation. Officers thought that the woman might have parked nearby and walked onto the bridge, but they have not yet found a vehicle, he said.

Follow the Bangor Daily News on Facebook for the latest Maine news.