When the icebreaker Thunder Bay visited Eastport last summer, I wondered why the Northeast would need one. And then I learned about the Penobscot and Kennebec rivers this time of year, as well as the mighty Hudson. Yes, they ice up even in the navigable tidal stretches.
Here’s how the Penobscot Narrows look from the observatory atop the Fort Knox bridge:
Jnana's Red Barn 