Although some claimed that the SSC cost was largely due to the massive civil engineering project of digging a huge tunnel underground, that was somewhat of a distortion.
The LHC's advantage in terms of cost was the use of the pre-existing engineering infrastructure and 27 km long underground cavern of the Large Electron-Positron Collider, and its use of a different, innovative magnet design to bend the higher energy particles into the available tunnel [REF].