Baltimore wants the federal government to fund a new light-rail line for the city. Set aside why taxpayers in Nebraska or Wisconsin should pay for a system solely for the convenience of Marylanders. [The] line is projected to cost $2.2 billion for 14.5 miles, about $2,400 per inch, entirely for above-ground work. Construction is projected to require nine years. That’s a pace of 1.6 miles per year. At that pace the First Transcontinental Railroad, completed in 1869 using far less machinery than available today, would have taken more than a thousand years to build.
Why federal construction spending doesn’t translate to GDP growth, Gregg Easterbrook