Service areas
Where we build.
From our Granite City headquarters to federal installations across Illinois, Missouri and the Midwest.
St. Louis, Missouri
Federal, industrial and municipal work across the St. Louis metro.
Learn more →Metro East & Granite City, Illinois
Our home base in Madison and St. Clair counties.
Learn more →Kansas City
KC Levees pump stations and Corps work in the metro.
Learn more →Central Illinois
Peoria, Springfield and the Illinois River valley.
Learn more →Central Missouri & Fort Leonard Wood
Training-area civil work at Fort Leonard Wood.
Learn more →Mississippi & Illinois River corridor
Riprap and levee repairs for the Rock Island and St. Louis districts.
Learn more →Overview
Two metros, one regional contractor
SIS works from Granite City, Illinois, across the river from downtown St. Louis. From there we reach federal installations, Corps of Engineers projects and industrial clients throughout Illinois and Missouri, and have delivered work as far as Arkansas and Kansas City.
Federal contractor pages
By agency and metro
USACE contractor, St. Louis
Corps past performance in four districts, based in Metro St. Louis.
Learn more →USACE contractor, Kansas City
KC Levees pump station experience in the Kansas City District.
Learn more →USACE Rock Island District
Levee repairs and Mississippi River riprap for the Rock Island District.
Learn more →GSA contractor, St. Louis
GSA repair and alteration around St. Louis.
Learn more →Federal construction contractor, Illinois
Federal projects across Illinois.
Learn more →Missouri
Kansas City, Fort Leonard Wood and St. Louis-area federal work.
Learn more →