2years.
It took 6 years to build the transcontinental railroad.
Sweg
15 years
it took about six years to build the transcontinental railroad
how long does it take to build a asimo
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.
how long did it take to build the half moon
how long did it take to build the scottish parliment?
how long did it take to build cabot tower
3 monthes
hs2 will take 15 years to build
how long does it take to build a beam bridge of 2400 sq ft