A yawning, nearly 30-foot-wide and 16-foot-deep sinkhole that could swallow two cars shut down a portion of Linwood Avenue on Detroit’s west side this afternoon. Authorities say it could take up to a week to repair. Water and Sewerage Department Deputy Director Darryl Latimer said crews arrived on the scene at 2:30 to repair a hole in the road. As they began the repairs, the road began to open up, he said. Latimer said he thinks it could have been started by a collapsed sewer pipe. “It may have been a collapse in the riser that started the void,” Latimer said, adding that a water main break occurred as well. Latimer said the sinkhole also exposed a gas line.