Do not attempt from the highway!
This is a simple one stop Multi with a tree climb at the final location.
At the posted coordinates, you can park your car and find a powerline post next to the gate. The post has a five digit ID number ABCDE.
The cache can be found at:
S 27 19. (D-C)(E-B)(A+B)
E153 00.(D)(E-B)(E-A)