CYR PLANTATION, Maine — Flash flooding from heavy rain and a beaver dam that broke loose caused a major washout that affects 22 miles of Route 1 from Van Buren to Caribou in northern Aroostook County. The problem is that it won’t be an easy fix and could take weeks to repair. People from Madawaska and Van Buren often travel Route 1 to reach the more southern parts of Aroostook.