This sign is absolutely correct.  No services for 66 miles.
I pedaled my bicycle across 66 miles of desert yesterday on interstate 90.  I used all six big bottles of water that I had bought for such an occassion, including my emergency one and three regular water bottles I carried with me. Also ate two freeze dried meals that I had. 
It was uphill the whole way as I am approaching the continental divide somebody told me.
I am 140 miles east of Rapid City South Dakota, leaving Gillette Wyoming this morning.

James Whelan
crazy biker at large
561 588 0808