The Teamster Pipeline Workers Union has been working with the Michigan State Police to remove its logo from a highway bridge near Lansing.
The union said it plans to sue the Michigan Department of Transportation and the Michigan Public Service Commission for violating its rights.
The state Department of Environmental Quality said it could not confirm the union’s request for a cease-and-desist letter.
The Michigan Department’s website said the union was “no longer authorized to maintain or operate its logo” in the state.
“The Michigan Department is working with our team to remove the union logo from the bridge in order to comply with the state’s Safe Drinking Water Act,” the department said in a statement.
“The Department is not authorized to remove signage from public or private property.”
The state Transportation Department did not immediately respond to a request for comment.
The Teamster has about 50 members across the country.
The union is the largest of the major unions in the United States, representing more than 30 million workers.
The Teamsters are also the largest union in Michigan, with about 3 million members.
The state has asked the Department of Natural Resources to remove it from the Interstate 80 bridge in Lansing.
State officials said the bridge is “not an interstate highway,” but the department was not clear on what the department means by that.
In a statement, the department acknowledged the Teamsters request.
“While we cannot comment on ongoing litigation, we are committed to respecting the rights of the Teamster and will comply with their request to remove their logo from Interstate 80,” the statement said.
The Department of Emergency Services and Public Protection said in its request to the Michigan DOT that the Department is “reviewing the request” and that “a resolution is expected to be forthcoming by the end of the day.”