#seasonal load restrictions #spring #spring thaw period #thaw index #trafficSeasonal load restrictions start for heavy vehicles serving OttawaBeginning at 12:01 a.m. on Monday, March 23, seasonal load restrictions are in effect. Commercial vehicles or trailers with a gross vehicle weight in excess of five tonnes or 11,000 lbs. per axle are prohibited on roads where restriction signage is posted, and on all truck routes identified as restricted on the Truck Route Maps ( Urban Truck Routes and Rural Truck Routes ). ...