The Minnesota Department of Transportation continues to remove infested and weakened ash trees along rights of way and road construction areas to help reduce the spread of the deadly emerald ash borer.
MnDOT mapped Twin Cities area ash tree locations and is in the process of mapping the Interstate 90 corridor in southeastern Minnesota. If ash trees are located within a road construction project in quarantined counties, MnDOT requires contractors to remove the trees.
Contractors also are required to follow quarantine restrictions, which prohibits the removal of all untreated hardwood outside of Winona, houston, Hennepin and Ramsey counties without a Minnesota Department of Agriculture Certificate of Compliance.
The Twin Cities and southeastern Minnesota, including Winona, are the only two locations in the state where the emerald ash borer has been found.