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It took 6 years to build the transcontinental railroad.
around 1850 - 1900
it took about six years to build the transcontinental railroad
The transcontinental railroad is 690 miles long.
1,700 miles
It took 6 years to build the transcontinental railroad which was through the years of 1863 from May 10th to the year 1869. Some say 20 years. Overland route came after.
it is1,776mile long first transcontinental railroad,
The transcontinental railroad took about six years to complete. The final spike was driven at Promontory Point, UT on May 10, 1869.
17 months
Approximately 2 years.
From 3 months to a year.
I don't know. I wasn't there. It was way too long ago. Check on Wikipedia. They will tell you.