In 2016, the scope of work included a physical survey of the structure to determine proper methodology to remove and replace the failed 1000 ft 19-.06 strand tendon. Major activities within the scope included:

• Engineering
• Installation of (2) temporary 1000ft tendons
• Remote controlled tendon de-tensioning
• Tendon removal via hydro demolition
• Installation of strand
• Stressing and grouting of the replacement tendon

Challenges included working inside an interstate bridge structure with live traffic.

As the prime contractor, our goal was to safely and expeditiously replace the structural capacity of the failed tendon. We successfully finished this scope in February 2017.

Freyssinet was once again contracted to perform post-tensioning work on the Wando Bridge in May 2019. The project involved the installation of two 1000-foot, 19-0.6-inch strand tendons, which act as supplemental tendons for one of the bridge structures.

In the adjacent bridge, two 1000-foot tendons were de-tensioned and removed due to existing corrosion. After their removal, new tendons were installed, stressed, and grouted.

Additionally, various post-tensioning repairs, including corrosion protection, were carried out on both structures.

Freyssinet also performed concrete repair work. The primary activities within this scope included:

• Spall repairs
• Segment joint strengthening
• Deck sealant

Freyssinet’s Mission

Freyssinet’s goal was to satisfy the client by repairing and restoring the structures to the upmost potential based on the scope of work.

Challenges on this project included meeting contractual milestones with limited lane closures, but we were able to finish all activities safely by March 2020.