USA HISTORY

Detailed explanation-1: -Starting in 1868 the railroad crews set, and subsequently broke, each other’s world records for the longest length of track laid in a single day. This culminated in the April 28, 1869 record set by Chinese and Irish crews of the Central Pacific who laid 10 miles 56 feet (16.111 km) of track in one day.

Detailed explanation-2: -By spring 1869, Central Pacific had made it through the mountains and onto the relatively flat land of western Utah, constructing 690 miles of track through some of the most difficult terrain ever encountered by a railroad.

Detailed explanation-3: -Total miles of track laid 1, 776: 690 miles by the Central Pacific and 1086 by the Union Pacific. The Central Pacific Railroad blasted a total of 15 tunnels through the Sierra Nevada Mountains.

Detailed explanation-4: -The story goes that on May 10, 1869, the Central Pacific Railroad’s tracks from the west were connected to the Union Pacific Railroad’s tracks from the east in Promontory Summit, Utah.

Detailed explanation-5: -Central Pacific Railroad, American railroad company founded in 1861 by a group of California merchants known later as the “Big Four” (Collis P. Huntington, Leland Stanford, Mark Hopkins, and Charles Crocker); they are best remembered for having built part of the first American transcontinental rail line.