In 1850 four Cherokee/white wagon train crossed the South Platte River near present Denver, turned north pioneering a new wagon road to the Laramie Plains (US Hwy 270) . Then west along the present Wyo/Colo border to Green River then NW to Fort Bridger. This route sometimes referred to as the "disease free" or "middle" route increased each year in numbers of Emigrants and cattle drives until by 1857 becoming the most heavily traveled or the major trail to California. In 1857 a new cutoff of the Cherokee Trail was established when the US Army built a road over Bridger Pass to Fort Bridger. By 1862 the Bridger Pass route of the Cherokee Trail was a well wore road when the Overland Mail and Stage moved from South Pass route on to it. In 1869 the rail road reached Utah ending the Overland Mail. The Cherokee Trail continued as an emigrant route as late as 1883 when the last wagon train from Wise County, Texas to Oregon was documented.