Steel pilings, reinforced concrete caps and prestressed concrete beams will provide the underpinnings for a new bridge in Lebanon, Ore. The bridge, which should last at least 100 years, will replace one built in 1955 when a wooden substructure supported cast-in-place concrete. "For the life of me, I don't understand why anyone would put something that will last 150 years on top of something that will only last 50 years," said Darrin Lane, roadmaster for Linn County. "What were they thinking?"

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