when did central pacific railroad trains first pass over donner summit
Donner Pass Principally designed and built under the personal, often on-site direction of CPRR's Chief Assistant Engineer, Lewis M. Clement (1837–1914),[10] the original (Track 1) summit grade remained in daily use from June 18, 1868, when the first CPRR passenger train ran through the Summit Tunnel, until 1993 when the Southern Pacific Railroad (SP) (which operated the CPRR-built Oakland-Ogden line until its 1996 merger with the Union Pacific Railroad (UP)) abandoned the 6.7 mile (10.7 km) section of Track #1 over the summit running between the Norden complex (Shed 26, MP 192.1) and the covered crossovers in Shed #47 (MP 198.8), one mile east of the old flyover at Eder. All traffic has since operated over the Track #2 grade crossing the summit 1 mile (1.6 km) south of Donner Pass through the 10,322-foot (3,146 m)-long Tunnel #41 running under Mount Judah between Soda Springs and Eder. SP made this change because the railroad considered Track 2 and Tunnel 41 (which was opened in 1925 when the summit section of the grade was finally double tracked) to be easier and less expensive to maintain during in the harsh Sierra winters than the Track 1 tunnels and snow sheds over the summit.[11]
National World War II Memorial Ground was broken in September 2001. The construction was managed by the General Services Administration.
First Transcontinental Railroad The necessity that now exists for constructing lines of railroad and telegraphic communication between the Atlantic and Pacific coasts of this continent is no longer a question for argument; it is conceded by every one. In order to maintain our present position on the Pacific, we must have some more speedy and direct means of intercourse than is at present afforded by the route through the possessions of a foreign power.[24]
Central Pacific Railroad Planned by Theodore Judah, the Central Pacific Railroad was authorized by Congress in 1862. It was financed and built through "The Big Four" (who called themselves "The Associates"): Sacramento, California businessmen Leland Stanford, Collis Huntington, Charles Crocker, and Mark Hopkins. Crocker was in charge of construction. Construction crews comprised 12,000 Chinese emigrant workers by 1868, when they constituted eighty percent of the entire work force.[5][6] They laid the first rails in 1863. The "Golden spike", connecting the western railroad to the Union Pacific Railroad at Promontory, Utah, was hammered on May 10, 1869.[7] Coast-to-coast train travel in eight days became possible, replacing months-long sea voyages and lengthy, hazardous travel by wagon trains.