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Granite Canyon Bridge, California/USA

Access solutions for a historic bridge in California

Scope

The Granite Canyon Bridge is a historic bridge located on the California coast. For refurbishment works, an access solution was required that combined multiple levels and systems in order to safely reach different work areas – particularly around the main arch and the arch ribs.


Challenge

The access solution had to accommodate a specific installation and repair sequence:

  • Working platforms could not be suspended beneath the main arch until the repair of the arch ribs had been completed.
  • In the rebar splice zones of the arch ribs, unsound concrete first had to be repaired before any further work could proceed.
  • The ribs had to be repaired one side at a time, requiring closure of the roadway on the deck above.
  • The access and work sequence had to be designed to support loads of up to 907 kg / 2,000 lb.

Performance

For this project, a customised multi-stage access solution was developed to meet the complex sequencing and load requirements of the refurbishment works. The system combined a QuikDeck suspended access platform with supported scaffolding, a shoring solution, and mobile scaffolding components, allowing different areas of the structure to be accessed safely at each stage of construction.

This integrated configuration made it possible to adapt the access arrangement in line with the repair sequence, particularly during the phased refurbishment of the arch ribs and the subsequent work beneath the main arch. By coordinating suspended and supported systems, the solution ensured structural stability, efficient installation and safe working conditions throughout the project, while accommodating loads of up to 907 kg (2,000 lb) and maintaining full compliance with project constraints.

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