Texas tunnel project abandoned in 1993

A tunnel measuring 22.5 kilometers was excavated in Texas, with 2 billion dollars spent, but no particle collisions ever occurred. The project was part of the Superconducting Super Collider, a massive physics experiment that was intended to be the largest and most powerful particle accelerator in the world.

Superconducting Super Collider planned to surpass CERN

The Superconducting Super Collider, launched in 1988, was intended to form a ring of 87.1 kilometers to surpass CERN, the European Organization for Nuclear Research. However, it was canceled by Congress on October 21, 1993, after budget overruns raised the estimated cost to 8.4 billion dollars.

Project costs and progress before cancellation

At the time of cancellation, 2 billion dollars had already been spent to excavate 22.5 km of tunnel, drill 17 access shafts, and construct 18,600 square meters of buildings, without any particle collisions having occurred. The site was purchased in 2012 by the chemical company Magnablend, the shafts were filled, and the remaining sections of tunnel are now used to collect rainwater.

Job promises and land expropriations

The project promoters had promised 4,500 jobs during the construction phase and 2,500 full-time researcher positions once the machine was operational. To make space for the ring, approximately 16,000 acres of land were expropriated, and about 90 houses disappeared from the landscape.

Budget overruns led to project's end

The General Accounting Office reported a 630 million dollar overage on a construction budget initially set at 1.25 billion dollars in February 1993. A month later, the total estimated cost rose to 8.4 billion dollars, leading to the project's cancellation.

Financial breakdown and site repurposing

The financial balance was chilling: 2 billion dollars already spent, of which 400 million paid by the state of Texas itself, the rest coming from the Department of Energy. At the time of cancellation, about 20 percent of the project was completed. The site remained almost abandoned for more than a decade before being sold to Ellis county and eventually acquired by Magnablend in 2012.

Future collider under consideration

In May 2026, the European Organization for Nuclear Research (CERN) Council recommended the Future Circular Collider electron-positron, a 91 kilometer ring with an estimated cost of 15.3 billion Swiss francs, or approximately 19 billion dollars, as a priority project. The final decision is expected for 2028.

Political influence on large-scale science projects

The history of the Superconducting Super Collider reminds how these large-scale projects remain suspended on political will, more than on technical prowess alone.