A Louisiana towboat struck and damaged a bridge in 2021, but the vessel’s pilot never reported it to authorities, the National Transportation Safety Board (NTSB) said.In the early morning hours of Dec. 23, 2021, the 86-foot-long Miss Mollye D, then operated by Deloach Marine Services (DMS), was pushing six hopper barges on the Intracoastal Waterway to New Orleans