2022/09/14 Council Agenda Packet

After the evaluation process has concluded, the Consultant will develop the concepts that advanced through that process to a 10% design level (10% design is defined under Task 4 Assumptions). For scoping purposes, it is assumed that one corridor -type concept and up to five (5) spot location/intersection concepts will be advanced from the evaluation process for conceptual design (see Table 1). With the 10% design, the Consultant will also develop a conceptual cost estimate that will identify quantities of known bid items such as pavement, curb, sidewalk, channelization, signals, and removal of pavement, channelization, sidewalk, and curb. Contingencies will be used for unknown items such as construction traffic control, mobilization, signing, right of way, design level. The Consultant will assist the City in developing an implementation plan that considers phasing and funding opportunities as well as coordination with surrounding projects. This plan will include developing a high-level conceptual project schedule through design for the 10% design concepts. Assumptions: • 10% design layouts will identify right of way, channelization, curb lines, intersection control identification including signals and does not include storm drainage facility and structures, utilities, and structural facilities. • 3D Design is not included in this scope. • 2D sketch -level understanding of improvements will be developed based on aerial mapping and design information available. • Conceptual design will be on aerial mapping showing channelization, curb and ROW lines. • 2D AutoTurn or Autodesk Vehicle Tracking movements will be completed for concept designs. • Any specific AutoTurn or Autodesk Vehicle Tracking vehicles will be provided by the City. • The implementation plan is assumed to be a brief memo with limited figures/illustrations. Deliverables: • Draft and Final Basis of Design Memo • A 10% concept design with Vehicle Tracking Swept Path Analysis figures • Conceptual cost estimate • Draft and Final Implementation Plan 5) Transportation and Traffic Analysis Scope: Using data collected in Task 2, the Consultant will identify key travel patterns within downtown Everett. If the data identifies heavy vehicles/trucks this data subset will be summarized. The Consultant will conduct traffic analysis for up to 20 intersections using Trafficware Synchro software for intersection analysis. Roundabouts, if proposed, will be analyzed and supported by a SIDRA analysis. This traffic analysis will be conducted for an existing year as well as a 20-year horizon year for one time period — assumed to be the PM peak hour. The future year analysis will be conducted by applying a growth rate developed from the Snohomish County travel demand model.