Overview
This project included the development of a traffic management plan for improvements to Russell Road at the I-95 interchange (Exit 148) including additional travel lanes, turn lanes, and traffic signals. VDOT provided crash data for the Russell Road/Interstate 95 interchange which was reviewed to identify operational issues with the current ramp configurations. The planned sequence of construction was evaluated to determine the number of lanes available to traffic during each of the construction stages and to identify when changes to the available lanes (i.e. capacity) occurred. From this review five stages of construction were identified for analysis. SYNCHRO analyses were performed for the selected stages of construction and recommendations were made regarding the sequence of construction and use of temporary traffic controls (i.e. signals) at the three ramp junctions. Temporary signal designs and timing plans were developed for five different stages of construction based on the SYNCHRO analyses. Five sets of timing plans (for each of the five construction stages) were developed for time based coordination during normal weekday AM, mid-day, PM, off-peak, and Saturday peak hours using SYNCHRO. The results and data from the analyses were summarized in a report that provided recommendations maintaining traffic operations during the various stages of construction. All five sets of timing plans for the temporary construction signals were submitted to VDOT for approval.
Initial traffic signal timing plans were also developed for the permanent traffic signals installed at three ramp junctions on Russell Road at the I-95 interchange (Exit 148) as part of the interchange improvements. Existing traffic count data was collected and SYNCHRO analyses were performed for the five specified peak hours (weekday and weekend). Traffic signal timing plans were developed for time based coordination during normal weekday AM, mid-day, PM, off-peak, and Saturday peak hours using SYNCHRO. Timing plans were submitted to VDOT for approval.
