Türkiye – Railway construction works – Design and Construction of Infrastructure & Superstructure Works including Electrification under the İstanbul North Rail Crossing Project (INRAIL)
Issued by Ministry of Transport and Infrastructure, Directorate General of Infrastructure Investments · via TED — Tenders Electronic Daily (EU)
- Published
- 25 Sept 2026
- Closes
- 14 Oct 2026, 23:59 UTC
- Reference
- 580920-2026
- Location
- Türkiye
- Sector
- Construction & Infrastructure
- Type
- works
Details
The Ministry of Transport and Infrastructure, Directorate General of Infrastructure Investments, Türkiye (hereinafter - teh Ministry), 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 Çayrova station on the Asian side and terminate at Çatalca station on the European side, crossing 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. The Ministry 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 Austrian Tunneling Method (NATM) tunnels totaling 23.3 km, 17 cut-and-cover tunnels totaling 3.7 km, two viaducts and 40 bridges totaling 22.1 km, Stations, etc. The scope of works covered under each lot is specified in the RFP document. The Telecommunication and Signalling Works are not included in this procurement package and will tendered separately. The Ministry now invites sealed Proposals from eligible Proposers for the Design and Construction of Infrastructure & Superstructure Works including Electrification subdivided into the four lots below. Proposers may submit Proposal for one or more lot(s): Lot 1 — Construction and Electrification Works for the Çayrova – Sabiha Gökçen Airport – Kurtdomu Corridor (28,49 km); Lot 2 — Construction and Electrification Works for the Kurtdomu – Alibahadr Corridor (25,76 km); Lot 3 — Construction and Electrification Works for the Alibahadr – YSS Bridge – Mithatpaa Corridor (32,14 km); Lot 4 — Construction and Electrification Works for the Mithatpaa – stanbul Airport – Çatalca Corridor (39,49 km).
Lots Lot 1 — Construction and Electrification Works for the Çayırova – Sabiha Gökçen Airport – Kurtdoğmuş Corridor (28,49 km) Lot 2 — Construction and Electrification Works for the Kurtdoğmuş – Alibahadır Corridor (25,76 km) Lot 3 — Construction and Electrification Works for the Alibahadır – YSS Bridge – Mithatpaşa Corridor (32,14 km) Lot 4 — Construction and Electrification Works for the Mithatpaşa – İstanbul Airport – Çatalca Corridor (39,49 km)
Buyer: Ministry of Transport and Infrastructure, Directorate General of Infrastructure Investments
Buyer country: TUR
Procedure: open
CPV code: 45234100
Full notice, tender documents and how to bid are on the official TED page (link above).
Context for bidders
There are 9 open Construction & Infrastructure tenders in Türkiye. This one closes in 16 days.
Similar Construction & Infrastructure tenders
- Renovation and Building Maintenance/repair Works in Adana· closes 13 Oct
- Turkey: W2: Design and Construction of WWTPs and Auxiliary Assets, West (Retender)· closes 9 Nov
- ISKUR General Directorate, Department of Foreign Relations and Projects, 8th Floor, Miscellaneous Decoration and Renovation Work
- Pure x50 data strogered unit warranty extension
- Türkiye – Works for complete or part construction and civil engineering work – Construction of Akçakale-Harran Drinking Water Transmission Line· closes 8 Oct
Documents
- TED-official-notice-580920-2026.pdfDownload (pdf)
Before you bid on this tender
A quick checklist to help you decide whether to bid and prepare a compliant submission for this construction & infrastructure opportunity. Always verify the details on the official source.
- Confirm the exact closing date and time (and time zone) on the official portal — deadlines are strict and can be revised by a corrigendum.
- Read the full notice and every attached document, including the scope, specifications and any bill of quantities or terms of reference.
- Check the eligibility criteria — prior similar experience, annual turnover, certifications and registrations — and make sure you qualify before investing effort.
- Prepare any earnest-money deposit (EMD) or bid security and the required formats early; missing or wrongly-formatted documents are a common cause of rejection.
- Note how bids must be submitted (online or physical), in what format, and whether a digital signature or portal registration is required.
- Watch for corrigenda and clarifications right up to the deadline — requirements and dates can change.
More Construction & Infrastructure tenders
- proposed renovation of njabini marketNyandarua County Government · Kenya
- AO JOD/BMR/2026-2027/02: Acquiring of Premises on Lease Basis for New Branch, Sindhari Road, BarmerState Bank of India · India
- Maintenance and provision of resident technical personnel for the elevators at Dr. Jamil Al-Tutunji Hospital / Sahabوزارة الصحة · Jordan
- تجهيز البنية التحتية لسوق البلد - شارع الحسبة (دعوة معدله)بلدية عجلون الكبرى · Jordan
- الخاص بإعداد الدراسات والتصاميم ووثائق عطاء التنفيذ لغايات إنشاء مبنى مديرية صناعة وتجارة وتموين الزرقاءوزارة الأشغال العامة والاسكان/ قسم لجنة الشراء الرئيسية · Jordan
FreeTender mirrors this notice for reference. Verify the details and bid on the official portal.
Verify & apply on the official portal →