The opening of the Tōkaidō Shinkansen and Seikan Tunnel and the planning of the Honshu-Shikoku Bridge Project all proved beneficial to JRCC's bottom line.
In September 1979, it was revealed that JRCC had used money intended for overtime and other expenses for personal vacations, and it became the target of the Board of Audit of Japan.
As a result, six people (including the director, Hiromori Kawashima) were forced to step down and 352 had their salary reduced, received warnings, or were otherwise reprimanded.
[3] A special accounting committee was also formed to return the mis-spent funds and pay taxes as was deemed necessary.
The JRCC was dissolved on October 1, 2003 and its responsibilities were passed to the Japan Railway Construction, Transport and Technology Agency (JRTT).