A court orders an injunction against construction of the Duluth Ship Canal, which Duluth was building in order to divert traffic from Superior, Wisconsin, which has the natural mouth of the harbor. Duluth mayor J. B. Culver orders the excavation into high speed, completing the work on June 13, just before the formal court order is delivered. Duluth's reply to Superior is "You can stop the water if you can. We can't." The Aerial Lift Bridge now crosses the canal.