DENVER (CBS4)– Federal authorities told the Colorado Department of Transportation and opponents of the planned Interstate 70 expansion this week that it would open an investigation into claims the project violates the Civil Rights Act.The pending investigation comes in response to a federal complaint filed with the U.S Department of Transportation by Earthjustice, an environmental law firm, and neighborhood groups impacted by the project, including the Cross Community Coalition, Colorado Latino Forum and Elyria-Swansea Neighborhood Association. Filed last month, the complaint alleges CDOT’s plan will result in “disparate and severe environmental and economic impacts” on the predominantly Latino communities.Candi CdeBaca,...