INTERSTATE 75 AND STATE ROAD 884 (COLONIAL BOULEVARD) INTERCHANGE LEE COUNTY, FLORIDA INTERCHANGE MODIFICATION REPORT Prepared for: Florida Department of Transportation – District One February 2015 Interchange Modification Report Interstate 75 and State Road 884 (Colonial Boulevard), Lee County, Florida I, Akram M. Hussein, Florida P.E. Number 58069, have prepared or reviewed/supervised the traffic analysis contained in this study. The study has been prepared in accordance and following guidelines and methodologies consistent with FHWA, FDOT and Lee County policies and technical standards. Based on traffic count information, general data sources, and other pertinent information, I certify that this traffic analysis has been prepared using current and acceptable traffic engineering and transportation planning practices and procedures. ______________________________ Akram M. Hussein, P.E. #58069 ______________________________ Date TABLE OF CONTENTS Page SECTION 1 EXECUTIVE SUMMARY ......................................................................... 1-1 SECTION 2 PURPOSE AND NEED .............................................................................. 2-1 SECTION 3 METHODOLOGY ...................................................................................... 3-1 SECTION 4 EXISTING CONDITIONS ......................................................................... 4-1 4.1 DATA COLLECTION METHODOLOGY ........................................................................ 4-5 4.2 TRAFFIC FACTORS .......................................................................................................... 4-7 4.3 DEVELOPMENT OF EXISTING TRAFFIC ..................................................................... 4-9 4.4 EXISTING YEAR PHYSICAL CONDITIONS ................................................................. 4-9 4.5 CRASH ANALYSIS ......................................................................................................... 4-13 SECTION 5 OPERATIONAL ANALYSIS PROCEDURES ......................................... 5-1 5.1 ADOPTED LEVEL OF SERVICE ..................................................................................... 5-2 5.2 ANALYSIS YEARS ........................................................................................................... 5-2 SECTION 6 MODEL DEVELOPMENT AND CALIBRATION ................................... 6-1 6.1 MODEL DEVELOPMENT ................................................................................................. 6-1 6.2 MODEL CALIBRATION ................................................................................................... 6-6 SECTION 7 ANALYSIS OF EXISTING (2012) CONDITIONS ................................... 7-1 7.1 EXISTING YEAR TRAFFIC CONDITIONS .................................................................... 7-1 7.2 EXISTING YEAR OPERATIONAL ANALYSIS ............................................................. 7-1 7.2.1 Existing Year Freeway and Ramp Merge/Diverge Analysis ............................... 7-1 7.2.2 Existing Year Ramp Terminal and Cross-Street Intersection Analysis ............... 7-2 SECTION 8 ALTERNATIVE ANALYSIS ..................................................................... 8-1 SECTION 9 FUTURE CONDITIONS ............................................................................ 9-1 SECTION 10 TRAVEL DEMAND FORECASTING .................................................... 10-1 10.1 DEVELOPMENT OF FUTURE TRAFFIC ...................................................................... 10-1 SECTION 11 EVALUATION OF ALTERNATIVES .................................................... 11-1 11.1 DESIGN YEAR (2038) ANALYSIS ................................................................................ 11-1 11.1.1 Design Year Traffic Volumes ............................................................................ 11-1 11.1.2 Design Year No-Build Operational Analysis ..................................................... 11-1 11.1.3 Design Year Build Operational Analysis ........................................................... 11-3 11.2 OPENING YEAR (2018) ANALYSIS ............................................................................ 11-32 11.2.1 Opening Year Physical Conditions .................................................................. 11-32 11.2.2 Opening Year Traffic Volumes ........................................................................ 11-32 11.2.3 Opening Year No-Build Operational Analysis ................................................ 11-32 11.2.4 Opening Year Build Operational Analysis ....................................................... 11-34 11.3 INTERIM YEAR (2028) ANALYSIS ............................................................................ 11-38 11.3.1 Interim Year 2028 Physical Conditions ........................................................... 11-38 11.3.2 Interim Year 2028 Traffic Volumes ................................................................. 11-38 11.3.3 Interim Year No-Build Operational Analysis .................................................. 11-39 11.3.4 Interim Year Build Operational Analysis ......................................................... 11-41 SECTION 12 IMPROVEMENT COSTS AND FUNDING COMMITMENTS ............. 12-1 I-75 and Colonial Boulevard (SR 884) Interchange Interchange Modification Report i SECTION 13 ENVIRONMENT CONSIDERATIONS .................................................. 13-1 SECTION 14 CONCLUSION ......................................................................................... 14-1 LIST OF FIGURES Page Figure 1-1 Continuous Flow Intersection (CFI) Configuration .................................................. 1-3 Figure 1-2 Superstreet Intersection (SS) Configuration .............................................................. 1-3 Figure 2-1 Interchange Project Location Map ............................................................................ 2-1 Figure 4-1 Area of Influence and Interchanges ........................................................................... 4-3 Figure 4-2 Existing Year 2012 AADT ...................................................................................... 4-10 Figure 4-3 Existing Year 2012 Peak Hour Traffic Volumes .................................................... 4-11 Figure 4-4 Existing Intersection Lane Geometry ...................................................................... 4-12 Figure 6-1 VISSIM Desired Speed Distribution on Colonial Boulevard .................................... 6-8 Figure 6-2 Intersection Routing Decision ................................................................................... 6-9 Figure 6-3 Combined Network Routing Decision .................................................................... 6-10 Figure 10-1 Future No-Build and Build AADT .......................................................................... 10-3 Figure 10-2 Opening Year 2018 Peak Hour Traffic Volumes .................................................... 10-4 Figure 10-3 Interim Year 2028 Peak Hour Traffic Volumes ...................................................... 10-5 Figure 10-4 Design Year 2038 Peak Hour Traffic Volumes ...................................................... 10-6 Figure 11-1 Design Year 2038 Lane Geometry for Build Alternative 1: Single Point Urban Interchange (SPUI) at I-75 and Colonial Boulevard ............................................... 11-8 Figure 11-2 Design Year 2038 Lane Geometry for Build Alternative 2: Enhanced Eastbound to Northbound Loop at I-75 and Colonial Boulevard ................................................ 11-13 Figure 11-3 Design Year 2038 Lane Geometry for Build Alternative 3: Tight Urban Diamond Interchange (TUDI) at I-75 and Colonial Boulevard ............................................ 11-16 Figure 11-4 Design Year 2038 Lane Geometry for Build Alternative 4: Diverging Diamond Interchange (DDI) at I-75 and Colonial Boulevard ............................................... 11-20 Figure 11-5 Design Year 2038 Lane Geometry for Build Alternative 4 Improved: Diverging Diamond Interchange (CFI-DDI-SS) at I-75 and Colonial Boulevard .................. 11-26 LIST OF TABLES Page Table 1-1 Year 2038 Alternative Screening Matrix .................................................................. 1-7 Table 4-1 Approved K, D, T Factors ......................................................................................... 4-8 Table 6-1 Maximum Weaving Distance Calculation along I-75 ............................................... 6-4 Table 6-2 Checklist of Calibration Criteria per FHWA Toolbox Volume III – I-75 AM ................................................................................................................ 6-14 Table 6-3 Checklist of Calibration Criteria per FHWA Toolbox Volume III – I-75 PM ................................................................................................................ 6-15 Table 6-4 Checklist of Calibration Criteria per FHWA Toolbox Volume III – Colonial Boulevard AM ....................................................................................... 6-16 Table 6-5 Checklist of Calibration Criteria per FHWA Toolbox Volume III – Colonial Boulevard PM ........................................................................................ 6-17 Table 7-1 Existing Year (2012) AM/PM HCS Freeway and Ramp Merge/Diverge Area Summary ..................................................................................................................