Huge sinkhole opens up on street in Fairfax, Virginia 00:10, Monday, 12 February, 2018 A water main break left a massive sinkhole in the middle of a neighborhood road in Fairfax, Virginia. Chopper4 footage shows the sinkhole is the size of at least five mid-sized cars. A resident saw the beginning of the sinkhole overnight and warned his neighbors to move their cars. A water main break occurred in the 4500 block of Twinbrook Road and caused the sinkhole, police said. Huge sinkhole opens up on street in Fairfax, VirginiaHuge sinkhole opens up on street in Fairfax, Virginia Share 13600 | 0