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Santa Ana Bridge Rehabilitation and Bike Trail Structure 12/27/2004 components of the structural improvements for the proposed bridge widening and reconstruction. 1. All plans will be prepared in English units. 2. Seismic analysis will follow the procedures as outlined in Caltrans SDC and chapter 20 of the Caltrans Memo to Designers. Effect of the combined structures will be analyzed, and additional retrofit requirement in addition to the bridge widening will be evaluated. 3. Structural aesthetics design will be included for the design of the structure barrier rails on Flower Street. Bridge aesthetics will follow the treatment on the existing structure. 4. Bridge structures will be designed following the latest Caltrans Seismic Design Criteria (SDC). 5. Because the bridge widening would involve a partial removal of the existing bridge overhang, the widening will be designed with the properly coordinated construction sequence and staging plans. Construction joints will be placed and specified on the plans to indicate location of splices. 6. Utility list will be updated at the bridge. New utility openings will be provided to accommodate new or realigned utilities. Utility relocation will be referenced in the bridge plans. 7. Bridge railings will be designed in accordance to the FHWA memorandum on Bridge Rail Analysis shown in exhibit 6-F of the Local Assistance Program Guidelines. The Unchecked Details plans and specifications will be submitted to the City of Santa Ana and Caltrans. It has been our experience that Caltrans will review the unchecked details plans (65% plans), but the railroad companies, US Corps of Engineers, County of Orange Flood Control District and Orange County Harbor Beaches and Parks, will not review them until the plans are near complete. The 65% plans will thus not be submitted to these agencies. DELIVERABLES: PRELIMINARY ESTIMATES DRAFT STRUCTURE SPECIAL PROVISIONS 65% UNCHECKED DETAIL PLANS. TASK 5 - 90% PS&E CHECKED DETAILS The WKA Team will follow the Caltrans practice and the plans will be checked independently by a registered engineer. The intent is to swap between the designers and checkers in order to maintain objectivity of the independent checking process. Differences in the calculations will be reconciled first before the Initial Plans will be submitted to Caltrans for review and approval. WKA will prepare a final quantity takeoff based on the standard Item List developed in accordance with the Caltrans Standard Specification and SSP. Designer quantity take- offs will be compared with the independent quantity takeoffs following the completion of unchecked Details Plans. We will also prepare a complete set of independent quantity check calculations of all structural components. The quantities will be compared with the designers quantity takeoffs, and all structure bid items will be checked in accordance with Caltrans Bridge Design Aids Section 11 "Estimating".