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MAINTENANCE OF TRAFFIC Collins Avenue, in the vicinity of 174th Street, is heavily traveled roadway with an Average Annual Daily Traffic (AADT) of 55,200 vehicles. This is well above average for a six-lane roadway. A Temporary Traffic Control Plan (TTCP) will be developed to safely address vehicular traffic, including emergency vehicles, pedestrian traffic and construction personnel. Construction operations shall be coordinated with the City of Sunny Isles Public Works Department, as the City’s noise ordinance (7 am to sunset) will require a noise permit nighttime construction. Any nighttime work will be coordinated with the Florida Fish and Wildlife Department because of the lighting restrictions required during turtle nesting season. All impacts to private properties, such as driveway reconstruction, will be coordinated with the respective property owner/condominium association. Lane Closure Analysis We have performed a preliminary Lane Closure Analysis to determine the number of allowable lane closures on Collins Avenue during construction. The analysis was based on: • 24-hour vehicular traffic counts provided in the 174th Street Pedestrian Overpass Planning Study • FDOT LOS Manual, Table 7 Peak Hour Directional Volumes, Class II Conclusions / Recommendations: Weekday Options: 1. From 12 midnight to 5:00 AM: Leave ONE lane open to traffic. 2. From 7:30 PM to 7:00 AM: Leave TWO lanes open to traffic. 3. From 7:00 AM to 7:30 PM: Leave THREE lanes open to traffic. Saturday Options 1. From 12 midnight to 7:30 AM: Leave ONE lane open to traffic. 2. From 7:30 AM to 12 midnight: Leave TWO lanes open to traffic. TTCP for Main Span Erection The critical TTCP phases are dictated by safe main span construction activities over Collins Ave. Erection of the main spine and ribs of the bridge can be accomplished in four TTC phases, thereby, minimizing traffic disruption. D-27