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Page 25 <br />kimley-horn.com 2828 Colby Avenue, Suite 200 Everett, WA 98201 425-708-8275 <br />Preliminary design will be completed at a level sufficient to define the bridge concept, confirm <br />major geometric and structural elements, and support refinement of project scope, schedule, and <br />cost. <br />Preliminary Design Development <br />Preliminary design activities are anticipated to include: <br />·Development of a ~30% plan set depicting overall bridge layout, horizontal and vertical <br />alignment, typical sections, preliminary foundation concepts, and landing locations. <br />·Coordination across disciplines (structures, civil, landscape/urban design, architectural <br />features, MOT, and utilities) to ensure consistency with the selected alternative and project <br />constraints. <br />·Refinement of constructability assumptions and preliminary maintenance of traffic <br />concepts. <br />·QA/QC review of plans, specifications, and quantities, to confirm consistency and <br />completeness. <br />The Preliminary Plans are expected to include the following: <br />Plan Sheet Description <br />Cover Sheet and Index <br />Legend, General Notes and Abbreviations <br />Survey Control and Existing Conditions <br />Typical Sections <br />Site Preparation Plans <br />Utility Plans <br />Drainage Plans <br />Structural Plans (TS&L) <br />Roadway Plans <br />Sidewalk Plan & Profile <br />Maintenance of Traffic Plot <br />The level of detail for each plan sheet will be consistent with a ~30% design submittal and is <br />intended to illustrate overall layout, design intent, and coordination between disciplines. These <br />plans are not intended to represent final design, and additional plan sheets, refinements, or <br />modifications may be required as the project advances through subsequent design phases. <br />TS&L <br />As part of the Preliminary (~30%) Design, Kimley-Horn will advance the selected preferred <br />alternative to a TS&L level consistent with the intent of WSDOT bridge development practices <br />and appropriate for a pedestrian bridge project. <br />The TS&L effort will establish the fundamental structural and geometric framework of the bridge <br />to support agency coordination, cost validation, environmental documentation, and progression <br />into final design. TS&L development is anticipated to include: <br />·Confirmation of bridge type and structural system (e.g., girder type, span arrangement, <br />framing concept).