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<br /> August 3, 2 06 <br /> CONTACT John Bonham, Associate Engineer, 541-682-5300 <br /> From Publi Information Section, 682-5523 or 954-2938 <br /> FOR IMME IATE RELEASE <br /> 19"' Century Bridge May Be Causing 21St Century Pavement Failure <br /> Tra is on Coburg Road will be restricted on Tuesday night as the Eugene Public Works <br /> Departmen investigates a pavement failure on Coburg Road just south of Oakway Road. <br /> Pubic Works staff recently noticed slumping in a section of the Coburg Road travel lanes. <br /> Crews dug p a small section of the problem area and found deteriorated wood. That led to <br /> historical r search that found evidence of a slough and wooden bridge in the same area where <br /> the slumpin is occurring. <br /> "Fir t we found signs of wooden timbers, like from a pier," said John Bonham, an <br /> associate a gineer in the Public Works Department who is investigating the problem and potential <br /> solutions. " hen we found an 1888 survey that referenced a bridge over a slough at that location." <br /> GP Data of Eugene has been retained to analyze the subsurface using ground- <br /> penetrating radar. This will allow Public Works staff to gather additional information, including the <br /> exact locati nand extent of any underground structures, without digging up the roadway. When <br /> the subsurf ce analysis has been completed, Public Works staff will determine the best approach <br /> to repairing the problem. <br /> The deployment of the radar equipment will require traffic restrictions on Coburg Road. <br /> The investi ative work will be done Tuesday, August 8, beginning at 9 p.m. Motorists should <br /> anticipate p lice flaggers, lane closures and possible detours. <br /> Eugene Public Works • www.eugene-or.gov/pw <br /> 858 Pearl St eet, Eugene, Oregon 97501 • 541-682-5523 • fax 541-682-6826 • e-mail pwadmin@ci.eugene.or.us <br /> <br />