Workers linking the caissons, 1964
![Workers unwinding spools of steel cable in a structure](https://www.communitystories.ca/v2/pont-tunnel-louis-hippolyte-lafontaine_bridge/wp-content/uploads/sites/130/2020/01/PrtScr-capture_15.jpg)
Quebec Transport Ministry Archives
To speed up construction of the caissons, spools of prestressed steel cables were uncoiled directly inside the concrete formwork.
Quebec Transport Ministry Archives
To speed up construction of the caissons, spools of prestressed steel cables were uncoiled directly inside the concrete formwork.