A company’s proposal to build a day care in downtown Dubuque hit a roadblock after a city commission denied a request to demolish a historic building on the proposed site. The City of Dubuque Historic Preservation Commission on Thursday unanimously denied a request from Cottingham & Butler to demolish the Joliet Event Center on Locust Street, which has been a part of Dubuque since the early 1900s. Cottingham & Butler representatives signed a letter of intent last month to purchase the Joliet Event Center to turn the property into a day care, subject to determining whether the building could be demolished.















