 two weeks. And today we've learned what caused a sinkhole that's disrupting traffic on a busy Moorhead Street. Crews have been working to repair the sinkhole on 8th Street South since Tuesday. That's when a break in a private sewer line caused the road to cave in. It's between the Comstock House and Taco Bell. Crews had to dig a 14-foot hole to access the broken line. The southbound lanes of 8th Street will be closed for the next week.