Section 11 of the Act provided that the issuance of bonds "shall be treble the number per mile" (to $48,000) for tracked grade completed over and within the two mountain ranges (but limited to a total of 300 miles at this rate), and doubled (to $32,000) per mile of completed grade laid between the two mountain ranges [http://www.cprr.org/Museum/Pacific_Railroad_Acts.html#1862-11 12 Stat.