It was a slow drive on the Dolphin Expressway in Northwest Miami-Dade Monday morning, after two collisions caused officers to shut down traffic in the area. Both accidents happened on the westbound lanes of State Road 836 at Le Jeune Road around 6a.m. The first crash involved a box truck that overturned. According to Florida Highway Patrol, the driver was transported to Ryder Trauma Center with non-life threatening injuries. The second crash involved a car, a truck, and a trailer that jackknifed. Three lanes were closed during the investigation and traffic was being forced out at NW 37th Avenue, with delays stretching back to 17th Avenue. Most of the lanes have since been reopened at Le Jeune Road, with the exception of one right lane. Northwest 27th Avenue is reopened as well.