State police are investigating a series of crashes that slowed westbound I-84 traffic to a crawl for most of the day between Boise and Nampa.
It all started when a tire blew on a semi-truck around milepost 37 near the Franklin Exit in Nampa. The truck then swerved across the right two lanes of traffic hitting a pickup truck. The collision caused both the vehicles to roll, the semi landing on top of the outside barriers, while the pickup rolled through the barriers all together. Both drivers were taken to the hospital. A third vehicle, a pickup, was also hit by a tire from the semi-truck.
As crews worked on that collision, a second crash happened about a mile away.
A pickup, whose driver was slowing down because of the backup caused by the earlier crash, was hit by a pickup near milepost 38. Those drivers were able to move their vehicles to the shoulder.
Then, less than an hour later, five vehicles were involved in a crash, also near milepost 38, including a tow truck that was trying to remove one of the vehicles from the second collision.
A driver crashed into the back of another car, which hit two more vehicles, then came to rest against the tow truck. One of the people in that crash was taken to the hospital.
The crashes had westbound traffic backed up for hours. Crews weren’t able to re-open all lanes until 5 p.m.