REIPL came up with the solution of TechSpan® structures for the ponds no 3A, 3 & 4:
• For Bridge no 1 (Holding pond no 3A) & Bridge no 2 (Holding pond no 3): REIPL proposed two pin TechSpan® structure with 3 arch spans with Reinforced Earth Head walls.
• For Bridge no 3 (Holding pond no 4): REIPL proposed two pin TechSpan® structure with 4 arch spans with Reinforced Earth
Based on the hydraulic cross section requirements and proposed coastal road formation levels, the Span of the 2 Pin TechSpan® arch structure is 9m and Rise is 4.5m.
In view of the marine clay and tidal effects the TechSpan® structures are being built on pile foundations.
Total length of each TechSpan® structure is 340 m and the carriageway width is 32.5m. The spandrel walls and wing walls are formed from reinforced soil retaining walls using EcoStrap®.