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ZeePM t1_jare1kl wrote

It’s less weight on the outer most lane which reduces the stress on the support. The road acts like a lever in that section. Hold a stick out and hang a shopping bag with a can of soup in it. As you move the bag further out it gets heavier.

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elprophet t1_jarkibo wrote

I would say it gets "torqueir" rather than heavier, but either way lots more stress. Reducing that to two lanes with no other changes will extend the useful lifespan significantly. Going back to three lanes will kill people when it collapses.

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