Here, the river begins to flow over a natural riverbed, but enters another concrete section soon after.

Costing C$ 27 million to complete, the track consisted of 48 reinforced concrete section with five separate starting points.

A floor of concrete sections covered with straw was being slotted into each setting.

On top of these pilings prefabricated concrete sections are placed.

It was constructed out of pre-fabricated concrete sections and took one year to build.

The weight of the massive concrete sections would damage the older subway tunnel if nothing were done to protect it.

The non-overflow part of the concrete section includes a power intake structure.

One concrete section extends from Jefferson south for four miles (6 km).

The west wall is constructed of large concrete sections reinforced by buttresses.

A concrete section kept the fallen top deck from completely smashing the car.