1920s
1920s
August 1923
July 1921
O. C. Simonds & Co.
November 1 1934
Illinois Division of Highways
December 21 1934
Illinois Division of Highways
December 21 1934
Illinois Division of Highways
September 29 1934
Lozier, J. S.
July 12 1946
Steinbrecher, Harold F.
circa 1953
Tyznik, Anthony
circa 1953
Tyznik, Anthony
March 27 1957
Steinbrecher, Harold F.
November 1 1956
Illinois State Toll Highway Authority
November 7 1974
October 17 1977
Clark, Dietz & Associates, Engineers, Inc.
Clark, Dietz & Associates, Engineers, Inc.
November 10 1959
George W. Barton and Associates
November 10 1959
George W. Barton and Associates
August 26 1958
George W. Barton and Associates
August 26 1958
George W. Barton and Associates
October 18 1956
George W. Barton and Associates
1922
O. C. Simonds & Co.