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Agate Street Extension Alternatives August 24, 2004 Page 3 of 3 "Avenue B" in the 1989 CUP for most of its length. Under Alternative 3, however, "Avenue B" would not connect to Franklin Boulevard as the CUP provided. Under Alternative 3, "Avenue B" would be extended further westward and turn north, to a new railroad underpass within the CUP area, but not contemplated in the CUP. After crossing to the north side of the railroad tracks, "Avenue B" would continue westward adjacent to the north side of the railroad tracks to provide access to the site. An underpass of the railroad requires approximately 400 feet of road length on both sides of the underpass to descend to a depth of 16-1/2 feet and ascend back to ground level. The underpass was located 400 feet west of the Millrace to avoid impacting the Millrace and to minimize the length of roadway north of the railroad. Because of the close proximity of Alternative 3 to the railroad, the new underpass would cross under the railroad at a 45 degree angle. The close proximity of Franklin Boulevard to Alternative 3 precludes a connection of the two roadways because of the grade separation caused by the underpass. The Millrace on the south side of the railroad is significantly wider than the Millrace on the north side of the railroad and would require a longer bridge than Alternatives 1 and 2. Alternative 3 passes through an area developed and actively used by the University of Oregon. This alternative requires the acquisition and demolition of five Quonset huts used for storage and two greenhouses. In addition, the alternative would have to include provisions to maintain the local circulation currently provided to the University' s steam plant, facilities and maintenance buildings and classrooms. A vacant structure owned by the City on the west side of the Millrace would also be demolished with this alternative. Cost Estimate Alternative 3 is estimated to cost $19.5 million. The roadway is approximately 10 percent longer than Alternatives 1 and 2. The cost estimate includes $13.8 million for construction and $5.7 million for right- of-way. The construction cost includes $3.9 million for road construction, $2.5 million for a new bridge over the Millrace, and $7.4 million for a new railroad underpass. Attachments (2)