I looked this up for you Kee...........I never questioned the curves, just thought they were graceful.
At 12.9 kilometres (8 miles), the Confederation Bridge is world’s longest bridge over ice-covered water. It has won dozens of international engineering awards since its construction, and was designed to last for a century.
Engineers designed the bridge with graceful curves to ensure drivers remain attentive, and to reduce the potential for accidents that experts believe happen more often on straight highways or bridges. The highest curve at the Navigation Span reaches 60 metres above water, allowing large sea vessels, including some cruise ships, to navigate under the bridge between its piers, which stand 250 metres apart.