The police drama was axed by the broadcaster last month after 27 years on the air. Poor ratings were blamed for the decision.
Goodwin, who played Sergeant June Ackland between 1984 and 2007, has now said that the programme's 2009 revamp sealed its fate.
Speaking on Sky1's Angela and Friends, the actress explained: "They messed about with it too much. They moved it around the schedule. It didn't end up being The Bill."
She added: "It's not the show's fault, it's the people who made it over the years."
ITV scrapped The Bill's twice-weekly format last year, transforming the show into a post-watershed drama airing at 9pm once a week.