(Not sure if the weights of locomotives listed are shipping weight or maximum track loading including water.) If you estimate from the available data that about 21,000 miles of track were put in place during the 1860's in the U. and that the amount of iron used is proportional to the track miles built, then the percent of iron used in building the transcontinental railroad (compared to all U. railroads' iron use during 1860's construction) is about: (1,776/21,000)*100 = 8.5% According to Galloway: "The number of ties varied from 2,260 to 2,640 per mile, depending upon alignment and grade. The total completed length of the sheds and galleries was about thirty-seven miles, the building of which consumed 65,000,000 feet board measure of lumber and 900 tons of bolts, spikes, and other iron." of rail was accounted for, as shown by a letter from Collis P.
Huntington, in New York, dated 1873, to a supplier of rail, The Pennsylvania Iron Co., in Danville, Pennsylvania. Huntington says, in part that he contracted to buy ' ...
I cannot give any estimates on the trestles or the many bridges, some of which wereover a thousandfeet long; and then there was the lining and shoring inside the tunnels.
Both railroads constructed hundreds, if not thousandsof buildings, most of them were huge in size, Depots, Warehouses, buildings for housing employees stationed along the lineand the like.
The ties varied in size, some as long as 10 feet and some as large as 8"x10" in size, depending if the track was being laid in the mountains or the deserts, on heavy or gentle grades, on curves or tangents (straight track). At one time the Central Pacific had as many as 25 Saw Mills in Truckee just milling lumber for the railroad which required as many as 40 trains to supply the front withties and timber– and they just managed to keep up with the track laying forces.
Entire forests were cut back for miles from the line, some taking a hundred years or more to recover.
The first approximately 112 miles of railvaried in weight from60 to 66 lb pattern, that is 60 to 66 lbsper lineal yard.That would requireagreat deal of research to even estimate. This should be an easy one to develop a reasonable estimate as there was an average of about 2,500 wood ties per mile over the entire 1,776 miles of the transcontinental railroad.The average size of the tie was 6"x8" x 8 feet long. I'll leave that one for you to figure out the Board Feet required. Then there were the side tracks which amounted to about 10% of the mainline track.The greatest amount of lumber used for one project was the 37 miles of Snow Sheds, as mentioned above.Some other major uses for lumber: There were many, many wooden trestles, most of them were huge and they required an enormous amount of lumber.D., Harvard Economic Studies, 1908, states on page 256 that: " ... both principal and interest were paid in full." Regarding the CPRR and Western Pacific RR, Tutorow, p.1004 reports that final payment to the government was organized by a commission appointed by an 1898 act of congress, determined to be ,812,715.48 on Feb.I would think that [the above] estimate of approximately 200,000 tons of iron, just for the track, is as close as you will ever get without access to the original records scattered in archives across the country, and then it is doubtful they are even close to being complete.On the matter of engines, there was 159 engines built for the CPRR between 1863 and May 1869 and 152 engines built for the UPRR during the same period.See the discussion of "dollars per mile of track" including the question of exactly where do the Sierra Nevada mountains begin and end. Graves states that the 1887 Pacific RR Commission said the cost of construction from Sacramento City to Promontory, as of July, 1869 was ,249,916.11; cash or cash equivalent was ,397,135.58.See comments regarding the role of the government in financing the transcontinental railroad. The bonds were sold at par in New York, then transferred to San Francisco where they were converted to cash/gold.