State DOT said some lanes won't reopen for weeks after three large voids emerged on heavily traveled highway link, as agency awaits word on federal assistance.
National Transportation Safety Board also recommends vulnerability assessments for 68 U.S. bridges one year after the Francis Scott Key Bridge collapsed following a ship strike to one of its piers.
The U.S. Environmental Protection Agency plans to reconsider existing regulations for pollution cleanup, water discharge and air emissions limits while gutting internal diversity efforts and environmental justice programs for already hard-hit communities.
The bridge received almost $400 million from the federal Bridge Investment Program, with Tennessee and Arkansas splitting the remaining $787.5-million cost.