BOISE, Idaho (AP) — Idaho taxpayers will pay nearly $400,000 to bring the state's recently renovated Capitol into compliance with the Americans with Disabilities Act.

The Spokesman-Review reports that state officials wrongly assumed the Capitol qualified for exemptions permitted for historic buildings while undergoing the $120 million renovation back in 2010. A complaint filed to the U.S. Department of Justice sparked a full investigation of the building, which has resulted in 110 necessary changes.

State Deputy Public Works Administrator Jan Frew says the work will begin this summer and be completed by 2017. These changes include adding accessible elevators, altering several entrances, and tearing out the two curved, sloping sidewalks that led to the low-level entrance.