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MDT Proposes Erosion Control on I-90 Madison River Bridges

The Montana Department of Transportation (MDT) is seeking public comments on a proposal to remove and install new erosion control measures under the east and westbound Interstate 90 structures over the Madison River, approximately half a mile east of Three Forks.

Proposed work includes placement of bank and stream bed stabilization material into the stream channel. The purpose of the project is to enhance the safety of the bridge by minimizing erosion at the bridge supports.

Construction will be scheduled based on completion of all project development activities and availability of funds. Right-of-way acquisition in the form of an easement will be required. Relocation of utilities and temporary construction permits may also be necessary. MDT staff will contact all potentially affected landowners prior to performing survey work. If necessary, staff will again contact landowners prior to construction regarding any property and temporary construction permit acquisition.

The Montana Department of Transportation welcomes the public to provide ideas and comments on the proposed project. Comments may be submitted online at or in writing to Montana Department of Transportation, Butte office, PO Box 3068, Butte, MT 59702-3068. Please note that comments are for project UPN 10208000.

The public is encouraged to contact Butte District Preconstruction Engineer Dave Gates at 406-494-9636 or Project Design Engineer Megan Cail at 406-444-6230 with questions or comments about the project.

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