Beale's Wagon Road (BWR) seems to have passed "over Winchester Mountain" headed west about 13 miles after it crossed Emachaya Creek (0.8 miles WSW of Whitefield) on its way to North Fork Town, which was 2.5 miles north across the (South) Canadian River upon arriving at the mouth of Longtown Creek. The OK 9 highway generally follows the BWR pretty closel from Stigler thru Whitefield on west for several miles toward Enterprise, until reaching the curve 2.3 miles NE of Enterprise. (Obviously OK 9 is following a E-W section line, and not the BWR, which was tracking westward along existing trails and around Indian farms, etc.).
Beale made Camp 5, perhaps a mile north of the "curve in OK 9" and the large modern open mining pit, northwest of the nearby water tower. The next day Beale headed northwest 4 miles to the base of "Winchester Mountain," made a 1-mile steep climb up to the crest, and from there had smooth sailing on a slight decline for 4 miles westward along a good road to the Canadian River (ferry). He did not cross Longtown Creek.
To follow this "Winchester" section of Beale's route, go 1.3 miles north of Enterprise (junction) on OK 71 to the intersection of Brooken Mountain Road. Turn west, or left. Follow the paved Brooken Mt. Road for the next 7.6 miles across Winchester Mt. and the "good road" down the western side to Longtown (at Piney Creek Road). Brooken Mt. Rd. becomes CR E 120 as you cross the county line and near Longtown. Generally, Brooken Mt. Rd. lies within 1/4 mile of the BWR the entire 7.6 miles, slightly left of BWR on the eastern half, then slightly right of the BWR on the western half, being almost together at the western end.
No public road continues west (past Piney Creek Road) down to Lake Eufaula. CR E 120 (BWR) T-junctions with Piney Creek Road (& the private PCR POA subdivision). The BWR continued 2 miles on downhill westward to the Canadian River, now Lake Eufaula, just below the submerged mouth of Longtown Creek and above the mouth of the North Canadian, on the north side.
Stop at Piney Creek Road, then turn left at the T-junction, and travel 2 miles south along Piney Creek Road to OK 9, and perhaps on west to Lake Eufaula.
Source: Journal of Beale Wagon Road Survey, Univ. of Michigan, IT part in pp. 8-12, at:
https://babel.hathitrust.org/cgi/pt?id=mdp.39015030947298
Details of the Beale Survey’s Itinerary and Journal Log in Indian Territory will be found on pp. 76-77.