Is Pete Buttigieg Responsible For the Baltimore Bridge Collapse?~Or could it have been poor construction due to racism in the area?

Following the tragedy that unfolded early this morning in Baltimore Maryland when a cargo ship ran into the Francis Scott Key Bridge (causing it to collapse), frustrations have everybody pointing fingers in every direction, looking for somebody to blame. Is Transportation Secretary Pete Buttigieg responsible? Or could it just be because of racism when the bridge was built?