A few lanes on Highway 403 heading westbound were shut down on Friday afternoon after a transport truck dropped its load on the roadway just before 1 p.m.
Ontario Provincial Police (OPP) say some large pipes fell off the back of a carrier and into the far right lane. The roadway was fully closed for a period of time.
Traffic moved slowly for much of the afternoon with some vehicles being rerouted at York Boulevard.
OPP say specialized equipment occupying a number of lanes for a cleanup was the reason.
The ministry of transportation (MTO) said heavy steel wire spools that fell off the transport damage some of the roadway.
“The incident caused minor damage to the asphalt on the bridge deck and significant damage to the guard rail on the right shoulder,” MTO issues advisor Kristine Bunker told Global News.
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Police revealed the cleanup would take hours. There were no injuries.