It was evidently built at some point between 1947-48. The EEBEE airfield was apparently closed at some point between 1951-55.
The loop road was an early test track for military vehicles.
Military - Bases, Abandoned, Raceways - Test Tracks
Links: www.airfields-freeman.com
By: kjfitz
https://www1.nga.mil/About/nce/Pages/default.aspx