The St. Louis District, U.S. Army Corps of Engineers
replaced one of three closure structures on the West Flank of the Wood River
Creek near the Olin Corporation April 24. Replacing the structures, and the
adjacent floodwall, is one feature of the Corps' Wood River Levee
reconstruction project to correct design deficiencies and maintain the levee
system's authorized level of protection (approximately 54-feet on the St. Louis
gage).
The closure structures replaced 139-feet of floodwall,
including the Powder Mill Road closure structure and a Kansas City Southern
railroad closure structure. Pile foundations have also been installed and
concrete walls and abutments are near completion, Corps officials said. New steel swing gates are expected to be
installed in the railroad and highway openings after the completion of the
concrete work.
The Corps' project includes rehabilitating 21 miles of
levee in the Mississippi River flood plain of Madison County, Ill. To correct
design deficiencies, project features include replacing 163 of 170 existing
relief wells and installing 60 new relief wells. Reconstruction project
features include the restoration or replacement of 26 closure structures, 38
gravity drains and seven pump stations.
In total, the Corps has expended more than $14.7 million
in the reconstruction project that reduces risk to 23,100 residents and
workers, and protects approximately $1.8 billion in commercial and residential
structures and infrastructure.
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