Construction of Overpass Bridges at Arifiye–Pamukova, Km 167+235 and Km 159+680

Client: Turkish State Railways (TCDD) 1st Regional Directorate, Istanbul

Scope of Works:

Construction of a 30 m Long Prestressed Precast Girder Bridge
Construction of a Total of 1,300 m of Bridge Approach Roads
Construction of 12,065 m Ø50 cm Crushed Stone Columns
Construction of 8,699 m Ø100 cm Deep Mixing Columns (Soil Mix)
Construction of 12,000 m² Earth Retaining Wall
Construction of a 220 m Long Underpass and Ramp Roads
Construction of 1,020 m Ø100 cm Bored Piles (Cast-in-Place Concrete Piles)
Construction of 900 m² Reinforced Concrete Retaining Wall
Installation of 425 m² Precast Facade Panels
Excavation and Fill Works – 120,000 m³
Construction of 150 m Stormwater Drainage Line (ø300 mm)
Installation of 24 m Steel Pipe (Ø500 mm) by Horizontal Directional Drilling / Pipe Jacking