The posted coordinates will bring you to a pedestrian/trail bridge
Look for a manufactures tag on the southeast post
Lines 5 and 6 will tell you what type of bridge this is
Number the first ten unique letters of the type of bridge 0-9
This will be your answer key for all seven of the Prairie Plants of Illinois Multi-Caches
This cache can be found at:
N41 56.EAR W89 09.RIB