Specific Procurement Notice: Istanbul North Rail Crossing Project (INRAIL)

Official Use Only Specific Procurement Notice Request for Proposals Works (Design and Build) (Two-envelope Bidding Process Without Initial Selection)

Employer: Ministry of Transport and Infrastructure, Directorate General of Infrastructure Investments

Project: İstanbul North Rail Crossing Project (INRAIL - P509952)

Contract title: Design and Construction of Infrastructure & Superstructure Works including Electrification

under the İstanbul North Rail Crossing Project (INRAIL)

Country: Türkiye

Loan No.: 9943-TR

RFP No: AYGM-INRAIL-2025-YAP 01/1-2-3-4

Issued on: July 2026

1. The Ministry of Transport and Infrastructure, Directorate General of Infrastructure Investments, Türkiye, has received financing from the World Bank through Ministry of Treasury and Finance towards the cost of the INRAIL Project. The Project is being jointly financed by the Asian Infrastructure Investment Bank, the Asian Development Bank, the European Bank for Reconstruction and Development, the Islamic Development Bank, and the OPEC Fund for International Development. The Project will finance the construction of a 127 km greenfield railway line designed to bypass the Istanbul Metropolitan Area and establish a high -capacity overland link across the Istanbul Strait (Bosphorus). The line will be double -tracked, electrified, fully signalized, and mixed-use, capable of carrying both passengers and freight, with a maximum freight carrying capacity of 50 million tons per year. The proposed railway line will originate at Çayırova station on the Asian side and terminate at Çatalca station on the European side, cross ing the Istanbul Strait by utilizing the existing track space allocated on the Yavuz Sultan Selim Bridge (YSS Bridge), also known as the Third Bosphorus Bridge, located at the northern end of the Istanbul Strait. 2. The Ministry of Transport and Infrastructure, Directorate General of Infrastructure Investments intends to apply a portion of the loan proceeds toward payments under the contract(s) for the "Design and Construction of Infrastructure and Superstructure Works, including Electrification" subdivided into four Lots as listed below. The scope of works covered under this procurement package as a whole (all four lots together) encompasses the design and construction including electrification of 122.3 km of double-track main line and 4.7 km of single-track connection lines, 5 twin -tube Tunnel Boring Machine (TBM) tunnels totaling 36.2 km, 22 double -track New …

Member: Türkiye

Sector: Transport

Notice type: Specific Procurement Notice

Issue date: July 23, 2026