Cadal Channal’s Bridge in Soyo, Angola

  • Location: Soyo, Angola
  • Solution: Bridges, Geotechnics
  • Type: Road bridges, Testing, prospection and studies, Geotechnical projects
  • Promoter: ALNG - Angola liquified Natural Gas
  • Client: Mota-Engil Africa
  • Scope: Structural Design, Roadway Track, Geotechnical, Hydrological and Drainage Studies and Short-term Embankments During Construction Design
  • Area: 5 250m2 deck surface
  • Project: 2010/2012
  • Construction: 2013/2015
  • Photography: Mota-Engil Africa
  • Contractor: Mota-Engil Africa
  • Dimension: 525m long, 22m max span
  • See on Google Maps

Cadal Channal’s Bridge in Soyo, Angola

  • Location: Soyo, Angola
  • Solution: Bridges, Geotechnics
  • Type: Road bridges, Testing, prospection and studies, Geotechnical projects
  • Promoter: ALNG - Angola liquified Natural Gas
  • Client: Mota-Engil Africa
  • Scope: Structural Design, Roadway Track, Geotechnical, Hydrological and Drainage Studies and Short-term Embankments During Construction Design
  • Area: 5 250m2 deck surface
  • Project: 2010/2012
  • Construction: 2013/2015
  • Photography: Mota-Engil Africa
  • Contractor: Mota-Engil Africa
  • Dimension: 525m long, 22m max span
  • Ver no Google Maps

The Bridge over the Cadal Channel, in Soyo, is part of the global project named "Cadal Channel Bridge and Associated Roads", which allows an alternative access to the ALNG's Kwanda Base, located on the north bank of the channel and bypassing the city of Soyo. The new motorway also connects, in the southern bank, to the Quintambe Road.

The bridge is 525m long, distributed over the following spans: 20.5m + 22x22.0m + 20.5m.

Due to the existing constructive constraints over the channel, the contractor decided for the maximization of prefabricated elements. The bridge deck consists of four pre-stressed, precast concrete I-section girders (made in Portugal) with a height of h=1.20m. The deck was cast-in-place over pre-cast slabs.

The foundations are indirect following a pier-pile solution. The piles have 1.20m diameter and the maximum depth reached was 42m.

The access road has a total length of about 7200m.

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