GPT Infraprojects Limited announced that its wholly-owned subsidiary, Alcon Builders and Engineers Private Limited, has secured a contract valued at Rs 85.53 crore (Rs 72.48 crore excluding GST) from CSTE Con, Eastern Railway, Kolkata, for signalling works related to the Sonnagar to Andal Multitracking project. The project, involving the commissioning of auto signaling work, is to be executed over a 12-month period, and the company's total order book now stands at Rs 4,473 crore with total order inflow for Fiscal 2027 of Rs 300 crore.