Kleinfelder leveraged the new Bridge-in-a-Backpack technology for the Royal River Bridge in Auburn, Maine. The Bridge-in-a-Backpack superstructure is composed of lightweight carbon-fiber tube arches that theoretically can be transported onsite in a backpack and filled concrete after installation. an EfficiEnt SubStructurE to accommodatE LoadS The Bridge-in-a-Backpack solution required an efficient and effective substructure to accommodate the

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