Mayors back as far as Jane Byrne in the early 1980s have dreamed of a super-fast O'Hare connection that would beat the hour or more it can take to drive or take the Chicago Transit Authority's Blue Line to the airfield. None got very far -- because of the cost, the shortage of money for other needed transit projects, and basic logistics: the Blue Line has too many stations and sharp curves and the like to provide truly fast service.
Emanuel started the process over, seeking public bids and eventually settling on two finalists: Boring and a consortium of other firms that proposed to run a conventional high-speed train link from a downtown station to O'Hare, using available railroad right-of-way.
Rivkin said city rules prevent him from saying why the second group lost. But insiders say its plan ran into the same problems as the previous Blue Line proposals: cost (likely in the billions of dollars) and the length of time a trip would take.
Musk's proposal faces potential technical problems but provides a sort of new-generation workaround.
Boring Company has developed what it says is faster drilling technology that allows it to create tunnels at least 90 percent below the cost of conventional methods. That advantage, it says, allows it to use one of the few available transit routes left in crowded big cities: underground, or "3D," as the company puts it on its website.
Musk, the founder of Space X and Tesla Inc., has high credibility in the tech world for delivering on ideas that have stymied others. And Boring's technology is good enough that officials in Los Angeles and Baltimore recently have signed off on initial projects that could lead to much bigger efforts, such as a vacuum tube "hyperloop" from Baltimore to Washington, D.C., and eventually New York.
The Chicago project generally would use already existing "electric skate" technology, though it would link them together in a form and length that is unique to this country. The direct connection via a dedicated tunnel would allow those vehicles to accelerate to over 100 miles per hour, according to the city and Boring, slashing the time on the 17-mile O'Hare run. And the project would-use the long mothballed CTA "superstation" under Block 37 as a terminal, with the end point located near the CTA's Blue Line terminus close to O'Hare terminals but outside of the airport's security perimeter.
Other big savings come from the fact that the vehicles would be automated, reducing labor costs.
Of course, for any of this to work, Boring's drilling technology has to work, the firm needs to attract investment capital and the project needs to clear a series of legal and environmental hurdles.
Rivkin said the city hopes to minimize the land-use issues by locating the two tunnels -- one inbound, the other outbound -- beneath existing government-owned right-of-way areas, such as the Kennedy Expressway or under streets that run diagonally through the Northwest Side, including Elston and Milwaukee avenues. He said Boring might need to acquire a few easements under private property, say for ventilation or to smooth the route's course, but said the city is prepared to use its powers of eminent domain if need be.
A lease deal will need to be struck with the CTA to use its Block 37 station, and Rivkin said he "expects" that Boring will pay for usage. But I wouldn't expect huge payments, given that the station -- now essentially an unfinished basement—has been unused for a generation.
The project will require City Council and federal environmental approval. Rivkin said he thinks a lengthy environmental impact statement will not be needed, but Boring's plans in L.A. have drawn some protests from environmental groups there.
What would happen to the dirt removed for tunnels? (Thirty-four miles of dirt and rock from 14-foot-wide tunnels is a lot of dirt.) Boring says it's considering making bricks from the material, which could be used in low-income housing programs.
Rivkin said those details, as well as questions such as whether the tunnels would convert to city ownership at some time, will be resolved in upcoming negotiations. He hopes to have a final contract deal by the end of the year.
Meanwhile, as former Deputy Mayor Steve Koch puts it -- Koch and Rivkin went to California last year to visit with Musk and see the prototype tunnel -- "This is a very smart way to dry to do something that we otherwise couldn't do." And if it's a roll of the dice, "it's a roll of somebody else's dice."
Bloomberg contributed to this report.