They're literally just holding different goods/ trade routes hostage now. Suez, then pipeline, then the Mississippi. The bridge is constructed in a segmented manner, with the smaller segments being around 380 feet, wide enough for any barge. There is no reason to close down the entire Mississippi river for a crack in one segment, or one support of this bridge.
US Coast Guard shuts part of lower Mississippi River as bridge cracks
More than 400 barges were delayed on the lower Mississippi River on Wednesday after a bridge crack prompted the U.S. Coast Guard to halt vessel traffic on a portion of the waterway crucial for shipping crops to export markets.www.reuters.com