The recent collapse of a Washington state bridge has drawn attention to the threat posed by 27 dilapidated locks and dams along the Mississippi River.
The failure of a single such lock and dam would result in a disruption of the transport of essential agricultural goods.
The systems, in need of substantial repair after surviving decades past their intended design lives, require funding from the federal government and from the Inland Waterways Trust Fund.
Several measures to appropriate funding to repairs and replacements are currently pending in the Iowa Senate and House of Representatives.
To read more about efforts to repair the locks and dams, click here.