West Valley police investigate an accident that injured 2 teenage girls Wednesday afternoon. Angela Grant, 16, Kearns, was in serious condition at LDS Hospital Thursday with head injuries, while Alison Hatfield, 16, West Jordan, suffered cuts and scrapes in the pileup. West Valley Police traffic investigator Richard Boddy said Hatfield was driving north on Redwood Road at 3800 South when her car hit a southbound vehicle driven by Stacy Udy, Salt Lake City. Neither Udy, 26, nor her daughter, Jodee, 10, was injured. Hatfield's car then collided with a vehicle that was moving half of a house. Its driver, Pete Crews, 61, Evanston, Wyo., was not injured in the accident. On Thursday, two women were killed and one was critically injured when the truck in which they were riding plummeted nearly 30 feet off an overpass on the western portion of I-215 at 4700 South, landing on its top. UHP Lt. Norm Steen said the truck was northbound when it collided with a car that had veered across the freeway lanes. Another car was also struck. One passenger in one of the cars was seriously injured, and the occupants of the third car sustained minor injuries, Steen said. The accident occurred at 10:55 a.m., tying up traffic in the area as emergency crews worked to free the victims from the wreckage. Steen said it took crews nearly half an hour to remove one of the victims. The identities of the victims were not available.