The District has partnered with the City of Lone Tree, Douglas County, and other entities to provide major capital improvements to and along arterial and collector streets to benefit District residents and property owners. The District has an Intergovernmental Agreement with the City of Lone Tree regarding projects. Through 2019 audited financial statements, the cumulative amount of shared costs for cooperative projects among the District, City, and or County, totaled $42,920,194 of which $12,755,022 represents the District's portion.