Pittsburgh Bureau of Fire, EMS and Police from Zone 2 responded to reports of a multi-vehicle crash on the Boulevard of the Allies at Bluff Street just before 3:00 a.m.

When they arrived on scene they found a vehicle that appeared to have traveled westbound into oncoming eastbound traffic on the Boulevard of the Allies, eventually striking the concrete median.

The female driver and passenger were entrapped and had to be extricated from the vehicle by firefighters. The driver was transported by EMS to UPMC Mercy Hospital in critical condition. The female passenger was transported to Mercy in stable condition.

Two other vehicles traveling eastbound sustained damage in the collision. The driver of one of those vehicles was transported to Mercy in stable condition. The driver of the other vehicle was unhurt.

The Police Bureau’s Collision Investigation Unit responded to the scene and is investigating the exact cause of the crash.

Police shut down access to the Boulevard of the Allies in both directions from several access points to prevent traffic from reaching the crash site while investigators processed and cleared the scene.

The investigation continues.