PHOTO: The Idaho State Police are looking for information on a semi that was involved in a multiple-vehicle crash on I-84 Wednesday morning. Two drivers of a Dodge 2500 pickup were pulling a horse trailer when a semi hauling a tanker made an improper lane change causing the dodge to go off-road, according to ISP. The Dodge went through the median and rolled coming to rest in the opposite lane, blocking westbound traffic. The trailer became unhitched from the Dodge settling in the median. A Kenworth tractor pulling a single trailer had stopped because of the wreck on the westbound side. A Peterbilt tractor pulling triple trailers heading the same way didn't stop and collided with the Kenworth, resulting in another International tractor pulling a single flatbed trailer on the westbound side.