Shotgun Willie’s is getting some competition in the late-night Glendale scene. A groundbreaking ceremony was held Thursday for a 10-acre entertainment district in the municipality surrounded by Denver, the final variation of a project Glendale has been planning for more than a decade. “It’s been a long time coming,” said City Manager Chuck Line, who assumed that role last year but was deputy city manager for two decades before that. The project, expected to cost $150 million, is being developed by Denver-based Central Street Capital, a family office founded by health care entrepreneur Rob Salazar.