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Dillon Construction Update Week Of June 12th

The Montana Department of Transportation (MDT), Helena Sand and Gravel, and Riverside Contracting anticipate working on the following, weather permitting:


Week of June 12:

  • The southbound ramps of the northern I 15 interchange will close Monday, June 12 for a few of weeks. Southbound travelers are guided to the southern interchange (Exit 62).

    • Northbound ramps and the northern interchange at Exit 62 will be open.

  • Single-lane closures on the I 15 bridge have been removed and both lanes are open.

  • Final landscaping tasks will take place along Atlantic Street.

  • Atlantic Street detours and temporary traffic lights are removed and have returned to regular traffic patterns.



Week of June 19:

  • The southbound ramps of the northern I 15 interchange (Exit 63) will remain closed for a few weeks. Southbound travelers are guided to the southern interchange (Exit 62).

  • Tentatively, crews plan to begin removing the top layer of pavement on Helena Avenue. New pavement will be replaced in the days following removal.

    • Traffic will be reduced to one lane.



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