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At the Texas DOT web site I learned that the 955 miles of four lane interstate I-69 through Texas will cost $6 billion, some 90% of which is to be paid by the federal government. This figure is for Texas, and does not include the states of Arkansas, Mississippi, Tennessee, Kentucky, and Inidana. I-69 is the new interstate being built over the next 15 years to funnel the NAFTA truck traffic to the northern states of America and to Canada. Not to long ago TGV was interested in the same news article at the Texas DOT website in building a high speed rail network for the Texas triangle, some 730 miles linking Dallas, Houston, and San Antonio during the 1990s for $4.4 billion. Both numbers average around $6 million per mile. Notice that rural 4 lane interstates are much cheaper to build than 8 or more lanes of urban interstates (freeways). The ongoing construction of the Texas high 5 interchange of Hwy 75 and I-635 in north Dallas will cost $262 million (for less than a mile), and the reconstruction of 9 miles of I-635 between I-35E and Hwy 75 will cost $1.45 billion. The average for this 9 miles stretch of interstate highway is $161 million per mile. So when people attempt to tell you that high speed rail is expensive, give them these numbers: urban freeways costs $161 million per mile, and high speed rail costs $6 million per mile.
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