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SCOPE OF SERVICES CITY OFSANTAANA SANTA ANA BOULEVARD GRADE SEPARATION HARKTHOHAS designer and checker will be reconciled for plan 8.3.3 Independent Check updates in the following submittal. Mark Thomas will perform an independent design 8.3 Pedestrian Bridge check of the pedestrian bridge in conformance with 8.3.1 Type Selection Caltrans bridge design procedures. The independent check will be completed by an Mark Thomas will prepare a Structure Type engineer who was not involved in the original Selection Report to assist the City in determining design of the structure. Calculations will be the best suited structure type for the project. The performed to check the bridge layouts and Type Selection Report will discuss geotechnical, structural integrity. Upon completion of the hydraulic, seismic, constructability, aesthetic, independent check, discrepancies between the utility, and drainage issues related to the structure. designer and checker will be reconciled and plans A final proposed alternative will be recommended updated. in the report, which will include a General Plan, 8.4 Retaining Walls Foundation Plan, and General Plan Estimate for the recommended alternative. 8.4.1 Plan Preparation 8.3.2 Plan Preparation Mark Thomas will prepare structural calculations Mark Thomas will prepare structural calculations and plans for the retaining walls, including and plans for the recommended bridge alternative. staircase details between retaining walls adjacent For the purposes of this scope of work, it is to northwest corner of the Pedestrian assumed that a two-span, cast-in-place, post- Overcrossing, with the proposed wall type for each tensioned box girder is the preferred structure location. For the purposes of this scope of work, it alternative. The structure design will be in is assumed that combination of soldier pile walls accordance with AASHTO LRFD Guide andfor secant pile walls (top down construction Specification for the Design of Pedestrian Bridges, method) and a Cast-In-Place (CIP) gravity 2nd Edition with the California Amendments and cantilever concrete retaining walls (bottom up Caltrans Seismic Design Criteria, Version 2.1. The construction method) will be utilized for the 6 wall 2025 Caltrans Standards and current versions of locations. the Caltrans Structure Technical Policies and The structure design will be in accordance with Bridge Design Manuals will be used. It is assumed AASHTO LRFD Bridge Design Specifications, 8th that the following plan sheets will be prepared: Edition with the California Amendments and • General Plan (1) SCRRA standards and design manuals. The 2025 • Index to Plans(1) Caltrans Standards and current versions of the • Deck Contours (1) Caltrans Structure Technical Policies and Bridge Design Manuals will be used. It is assumed that • Foundation Plan (1) the following plan sheets will be prepared: • Abutment Layout (2) • Abutment Details (3) Retaining Walls Sheet Description • Bent Layout (1) • General Plan (1) • Bent Details (3) • Index to Plans(1) • Typical Section (1) • General Notes (1) • Girder Layout (1) • Construction Details (1) • Girder Details (2) • Structure Plan (9) • Railing Details(1) • Wall Details (8) • Joint Details (1) . Drainage Layout (2) • Miscellaneous Details(1) • Drainage Details (2) • Log of Test Borings (3) • Railing Details (2) • Total Sheets: 23 • Aesthetic Details (1) 0 Miscellaneous Details(2)