This cache is NOT at the posted coordinates but you'll want to visit these coordinates to complete the field puzzle.
The final may not be accessible at times following heavy rains.
Riverside had a suspension (commonly known as The Swinging Bridge), long before New York's Brooklyn Bridge was built. Near the posted coordinates you'll find three plaques mounted to the bridge. You'll need two of the plaques in order to answer the questions below.
Final Coordinates:
N 41° 49.ABC
W 87° 49.XYZ
A = The SECOND digit of the year below "IN MEMORIAM" MINUS 4
B = Add together the two digits of the number following "State Aid Route"
C = Second of the two numbers following "State Aid Route"
X = The first digit of the year below "IN MEMORIAM"
Y = The Second digit of "State Route Aid" number multiplied by 2
Z = Below "IN MEMORIAM" use the fourth digit of the year MINUS 1
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