The accused, two American citizens, were charged with importing marijuana and possessing a prohibited firearm after mistakenly crossing the border into Canada.
They intended to stay at a hotel in Detroit but took a wrong turn onto the bridge to Windsor.
The court accepted their evidence that they had no intention of entering Canada and were unaware they had done so until they were on the bridge.
Finding that the requisite mens rea for the offences was absent, the court acquitted both accused on all charges.