The company that operates the Ambassador Bridge over the Detroit River is suing the state Transportation Department to open ramps leading to local freeways.
The Detroit International Bridge Co. said Tuesday a lawsuit has been filed with the Michigan Court of Claims.
It says transportation officials are "attempting to damage the Ambassador Bridge's business" while supporting a competing project to build a new bridge connecting Detroit to Windsor, Ontario.
The suit also says the completed ramps to the Ambassador Bridge have been blocked with dirt and construction equipment.
Transportation officials say the Bridge Co. has to complete its part of the project before the ramps can be opened.