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3921 WILSHIRE BOULEVARD, SUITE 420 <br />LOS ANGELES, CALIFORNIA 90010 <br />w.ww.urbanstudlo-la.,.o, <br />(213) 383.7980 Nn <br />(213) 383.7981p,., <br />John Kaliski AiA <br />R E C E VFri <br />'0' CT 2"' 2100" <br />"M rVa AW PL:tNN!N NP4-1, <br />City of Santa Ana planning staff asked Urban Studio to review the potential and cost of a <br />pedestrian bridge at the intersection of Main Street and Macarthur Boulevard. The objective of this <br />initial study is to preliminarily understand the impacts and potential costs of providing a pedestrian <br />link between existing and proposed commercial and residential development to the east and west <br />of Macarthur Boulevard at the intersection of Imperial Promenade. <br />Urban Studio, !utilizing aerial maps available on the internet and survey and footprint drawings <br />provided by Plexus (developers of Macarthur Place to the east) and Coastal Rim Properties <br />(developers of Geneva Commons to the west) prepared a base map including building footprints <br />and topographical elevations of existing and proposed development in the immediate vicinity of the <br />intersection of Macarthur Boulevard with Imperial Promenade (see attached Figure 1). Utilizing the <br />base map, Urban Studio developed six alternative layouts for pedestrian bridges (see attached <br />Figure 2 and Figure 3). <br />Key assumptions for the pedestrian bridge alternatives included the following: <br />1. Maintain minimum vertical clearance of 16 -0" at Macarthur Boulevard. <br />2. Pedestrian bridges must be accessible via elevators and/or ramps. <br />3. Design will utilize a standard bridge system. Urban Studio contacted and obtained <br />information from Continental Brides Company in Alexandria, Minnesota regarding <br />pedestrian bridge systems and unit costs. <br />4. Design should minimally impact existing and proposed structures. <br />CUP 04 -24/DA 04 -3/TTM 04-5 <br />SPR 04-6NA 04 -112OA 04-5 <br />EXHIBIT 12 <br />Page 1 of 8 <br />0210A 041025 JK JTXdoc 11 Page 1 of 4 <br />