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Overview of Restoration Tasks

Significant deterioration of stone, risk of leaking pipes, lack of ventilation, and a disorganized proliferation of office space put the Capitol on the path where it would eventually be unable to serve the public or the legislative process.

Four-Phase Plan

A sequence of four construction phases helps minimize disruptions to the legislative process. It allows the Capitol to remain partially open to the public and the State to continue to conduct its business during regular legislative sessions. Below are the phases and start dates.

Phase 1: September 2013 - Begin abatement, demolition and preparation of basement.
Phase 2: February 2014- Begin to procure and construct mechanical, electrical and plumbing infrastructure.
Phase 3: June 2014- Close and repair the West Wing's ground and first floors. Close and repair the entire East Wing.
Phase 4: June 2015 - Close and repair the West Wing's second and third floors. Close and repair the entire North Wing.

To-Do List

Below are the interior and exterior repairs, renovation and restoration underway at the Minnesota State Capitol.


The highest priority for the restoration project is to update the infrastructure supporting the Capitol Complex.

  • Replace corroded plumbing system
  • Update aged mechanical systems
  • Replace outdated electrical systems
  • Modernize technology systems
  • Increase energy efficiency
  • Increase the amount of public space
  • Improve access for all Minnesotans


A rapidly deteriorating exterior had the potential for significant life safety and water management issues. Exterior repairs will minimize marble deterioration, keep water from leaking into and damaging the interior, and ensure life safety.

  • Repair the crumbling stone
  • Replace deteriorated marble with new marble
  • Replace the roof
  • Replace windows with energy-efficient, historically accurate windows
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