The posted coordinates will bring you to a location where you can view a structure next to the train tracks. Count the steps on the structure to discover the the location of the geocache. Log only, BYOP!
The coordinates are:
12 steps: N 29 18.673 W 98 48.707
15 steps: N 29 18.547 W 98 48.822
19 steps: N 29 18.601 W 98 48.773
22 steps: N 29 18.628 W 98 48.835
no steps: N 29 18.687 W 98 48.704