As part of the City of Thunder Bay’s efforts to maintain our roadways during the period of spring thaw, when road damage is most likely to occur, reduced heavy load restrictions will apply within the City of Thunder Bay limits beginning at 8:00 am on Monday, March 11.

The above date is dependent upon weather conditions and is subject to change. The Reduced Load Restrictions apply to all streets within the City of Thunder Bay limits with some exempted streets.

Your co-operation in preventing excessive damage to our City streets is appreciated. To view a reduced loads exemption restrictions map, visit

For more information, or to obtain a print or fax copy of the above list, contact the Engineering Division at 807-625-2266.


Contact: David Binch, Traffic Technologist – Engineering, 807-625-2265