The regional Control Period 6 (CP6) framework covers building and civil engineering work with provision for signalling, power and communications schemes.
Network Rail will be holding a supplier engagement event on September 17 to outline opportunities and interested firms should email [email protected]
The deal will be split into six lots – two in the Western region and four in Wales.
Early expressions of interest will be required by the end of September with the PQQ process the same week ahead of a contract award by October 2019.