AgdaPkt 2010-02-01 clsd and regular

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Sa/tworks Proposa/- Transportation Group Summary Report (22 January 2010) 7A - ATTACHMENT NO.4 Page 19 CHAPTER 4 - SAL TWORKS ROADWAYS - EXTERNAL CONNECTIONS AND INTERNAL CIRCULATION SYSTEM This section discusses connections between the proposed Saltworks project and the surrounding roadways as well as the on-site roadways and circulation system. The external major roadway connections are discussed on pages V-2 through V-47 in the Statement of Justification (SOJ). Exhibit 17 in the SOJ (shown in Figure 2) is a schematic representation of the proposed connections between the Saltworks development and local/regional roadways. The internal roadway system is presented on Figures 18 through 20 and is described on pages V-47 through V-53 of the Statement of Justification. While the descriptions of the internal roadways are very complete, minimal information is provided in the Statement of Justification on the external roadway connections or proposed improvements to the surrounding local streets. Supplementary information was provided that describes the nature of the external roadway connections, including preliminary model volume and trip distribution plots and conceptual designs of the key connections showing cross-sections, horizontal alignments and in some cases grades for overcrossings. This supplementary information was the primary basis for the analysis of the external roadway connections while the information in the Statement of Justification was used for the assessment of the internal roadway system. 4.1 SITE ACCESS - MAJOR CONNECTIONS TO SURROUNDING ROADWAY SYSTEM In the Statement of Justification, the proposed project has three major roadway connections to the existing roadway network: one at Marsh Road / Bayfront Expressway; one new connection extending over US 101 between Marsh Road and Woodside Road; and one at Seaport Boulevard / Blomquist Street. The Saltworks application's Statement of Justification describes the creation of a "parallel roadway system" to US 101 to enhance connectivity and to disperse traffic to several routes to access both US 101 and to areas to the southwest. By design, the parallel roadway system was developed to provide alternative routes for Saltworks traffic to avoid the need to travel through the US 101 / Woodside interchange area where there is currently a high level of congestion. The key feature of the parallel roadway system is a new roadway that extends from Marsh Road in the south to Whipple Avenue in the north. The project's Perimeter Road would form the segment between Marsh Road and Seaport Boulevard. Between Seaport Boulevard and Whipple Avenue, the parallel road would generally follow the Blomquist Street alignment outlined in the City's new Draft General Plan. The parallel roadway would have five connecting roadways to move traffic to and from US 101, or over US 101: Whipple Avenue, Maple Street, Seaport Boulevard / Woodside Road, a new US 101 overcrossing between Woodside Road and Marsh Road, and Marsh Road. Based on the information contained in the Application and the Statement of Justification, plus the supplemental information on alignments, volumes, and cross-sections provided by the Saltworks consultants, the proposed physical characteristics of the parallel roadway and its connections can be generally described as follows: . A four-lane perimeter roadway (within the Saltworks) extending from Seaport Boulevard to the Bayfront Expressway / Marsh Road intersection . A four-lane Blomquist Street connection from the project Perimeter (Entry) Road to Maple Street . A four-lane grade-separated connection between the Blomquist Extension and Seaport Boulevard that would include a connection to East Bayshore Road . A new four-lane overcrossing of US 101 located between Woodside Road and Marsh Road with sidewalks and bike lanes 12