How much does Buca Onat Tunnel cost?
The Buca Onat Tunnel is the twin-tube road tunnel of about 2.5 km, part of an 8.3 km Buca–Bornova route, under construction in İzmir, Türkiye, financed entirely from the İzmir Metropolitan Municipality's own budget, with excavation begun on 12 March 2018, stopped in June 2019 when the first contractor left, resumed after a tender won by Özkar İnşaat for 559 million liras in April 2022, and an opening targeted for 2026. KARAR reported in May 2025 that the investment cost of the project at current prices is 3 billion liras.
Published project estimate
TRY 3 billion
Approximately $76.04 million
Cost basis: 2025
Btian P. DorsamCC BY-SA 4.0
Cost evidence
Basis of the published figure
Published project estimate2025
Project metrics
Key dimensions
- Total lengthkarar.com
- 2,543 m
Project record