The Maine DOT posted a bracket featuring 16 bridges across the state on its Facebook page.
In the post, state transportation officials said that over the next few weeks, people can vote for their favorite bridge.
Choices include the Penobscot Narrows Bridge, the Deer Isle-Sedgwick Bridge and the Corporal Eugene Cole Memorial Bridge.
Every day, officials will post polls about Maine's bridges on Facebook, Twitter and Instagram.
For more information, check out the Maine DOT's social media platforms.