A van carrying 17 people crashed in a ditch Tuesday afternoon, leaving 15 of them with injuries, the RCMP say.

The van, driven by an American, 21, drove into the ditch to avoid colliding with a semi trailer near Smoky Lake, Alta., the Mounties said.

None of the injuries are believed to be life-threatening but a woman, 18, sustained severe head lacerations, while others suffered broken bones and cuts, the RCMP reported.

The van was heading to Edmonton in preparation for a wedding later this week.