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deLay530407A-2. "New Wilsonville Highway (I-5) Baldock freeway. Under construction. Ground graded, bridge under construction. April 7, 1953", "Work. Preliminary construction, including cofferdams, for Willamette bridge makes a foreground for this picture showing how highway lanes will be separated. Wilsonville is at upper left in this shot, which, when joined to one above, gives a view of entire section of the new superhighway from Willamette to Tualatin." Caption published in Oregonian, April 26 1953