DETROIT — The Ambassador Bridge can proceed with its twin expansion project without interference from the City of Detroit, a Michigan Supreme Court ruled Wednesday.

The court ruling overruled a prior Court of Appeals decision stating that construction of new toll booths and a plaza extension near the existing bridge violated city zoning.

The city does not have authority to block construction of Ambassador Bridge projects, the court said.

According to the Associate Press and other local media, the privately owned and operated bridge company is exempt from city zoning ordinances because the Ambassador acts as “a federal instrumentality” designed to facilitate international and commercial traffic between Detroit and Windsor, Ont.

The city council in Windsor also objects to the bridge company’s twin span plans.

Windsor Mayor Eddie Francis told media that he can’t speak for Detroit, but on the Canadian side of the border municipal approval is required.