Draft Preliminary Engineering Report May, 2016 Draft Preliminary Engineering Report I‐95 from north of Northlake Boulevard (MP 36.575) to south of Donald Ross Road (MP 38.775), PGA Boulevard from west of Military Trail to west of Lake Victoria Gardens Drive, and Central Boulevard from 1.0 miles south of I‐95 to 1.0 miles north of I‐95 ETDM 13748 • Palm Beach County • Financial Management Number: 413265‐1‐22‐01 • Federal Aid Project No: N/A Prepared for: FDOT District 4 3400 West Commercial Blvd. Fort Lauderdale, Florida 33309 May, 2016 SR 9/I‐95 at Central Boulevard Interchange PD&E Study FM 413265‐1‐22‐1/ETDM 13748/Palm Beach County TABLE OF CONTENTS 1.0 SUMMARY OF PROJECT .................................................................................................................. 1‐1 1.1 Project Description/Background ...................................................................................................... 1‐1 1.2 Purpose and Need ............................................................................................................................ 1‐3 1.3 Recommendation ............................................................................................................................ 1‐6 2.0 EXISTING CONDITIONS .................................................................................................................... 2‐1 2.1 Typical Section ................................................................................................................................. 2‐1 2.2 Existing Right‐of‐Way ....................................................................................................................... 2‐1 2.3 Land Use .......................................................................................................................................... 2‐6 2.4 Horizontal and Vertical Alignments ................................................................................................ 2‐6 2.5 Pedestrian Accommodations .......................................................................................................... 2‐9 2.6 Bicycle Facilities ............................................................................................................................. 2‐11 2.7 Lighting .......................................................................................................................................... 2‐11 2.8 Existing Intersections and Traffic Signals ...................................................................................... 2‐11 2.9 Design and Posted Speeds ............................................................................................................ 2‐11 2.10 Railroad Crossings ....................................................................................................................... 2‐11 2.11 Drainage ...................................................................................................................................... 2‐12 2.12 Traffic Data ................................................................................................................................... 2‐15 2.13 Crash Data ................................................................................................................................... 2‐15 2.14 Utilities ........................................................................................................................................ 2‐19 2.15 Soils ............................................................................................................................................. 2‐21 2.16 Existing Bridges ............................................................................................................................ 2‐21 3.0 PLANNING PHASE/CONCEPTUAL EVALUATION ......................................................................... 3‐1 4.0 DESIGN CONTROLS AND STANDARDS ......................................................................................... 4‐1 5.0 ALTERNATIVE ALIGNMENT ANALYSIS .......................................................................................... 5‐1 5.1 No‐Build Alternative ......................................................................................................................... 5‐1 5.2 Build Alternatives ............................................................................................................................. 5‐1 5.3 Mainline Alternatives ....................................................................................................................... 5‐1 5.3.1 Mainline Alternative 2 – Collector Distributor Road ................................................................ 5‐1 i Preliminary Engineering Report SR 9/I‐95 at Central Boulevard Interchange PD&E Study FM 413265‐1‐22‐1/ETDM 13748/Palm Beach County 5.3.1.1 Typical Sections (I‐95 Mainline) ............................................................................................. 5‐2 5.3.1.2 Right‐of‐Way Required .......................................................................................................... 5‐2 5.3.1.3 Utilities ................................................................................................................................... 5‐4 5.3.1.4 Traffic Control Concepts ........................................................................................................ 5‐5 5.3.2 Mainline Alternative 3 – Braided Ramp System ....................................................................... 5‐5 5.3.2.1 Proposed Typical Section ....................................................................................................... 5‐6 5.3.2.2 Right‐of‐Way Required .......................................................................................................... 5‐6 5.3.2.3 Utilities ................................................................................................................................... 5‐7 5.3.2.4 Traffic Control Concepts ........................................................................................................ 5‐8 5.3.2.5 Bridge Analysis ....................................................................................................................... 5‐8 5.4 Interchange Configuration Options for Proposed New Interchange at Central Boulevard ............ 5‐9 5.4.1 Tight Diamond Urban Interchange (TDUI) ................................................................................ 5‐9 5.4.1.1 Proposed Typical Sections ..................................................................................................... 5‐9 5.4.1.2 Right‐of‐Way Required ........................................................................................................ 5‐11 5.4.1.3 Traffic Control Concepts ...................................................................................................... 5‐11 5.4.1.4 Bridge Analysis ..................................................................................................................... 5‐12 5.4.2 Diverging Diamond Interchange (DDI) .................................................................................... 5‐12 5.4.2.1 Proposed Typical Section ..................................................................................................... 5‐13 5.4.2.2 Right‐of‐Way Required ........................................................................................................ 5‐13 5.4.2.3 Traffic Control Concepts ...................................................................................................... 5‐15 5.4.2.4 Bridge Analysis ..................................................................................................................... 5‐15 5.5 Build Alternatives (Mainline Options Combined with Interchange Options) ................................ 5‐15 5.5.1 Build Alternative 2 (CD Road with Tight Diamond Urban Interchange) ................................. 5‐15 5.5.1.1 Typical Sections .................................................................................................................... 5‐15 5.5.1.2. Conceptual Plans ................................................................................................................. 5‐15 5. 5.1.3 Right of Way ........................................................................................................................ 5‐15 5.5.1.4 Cost Estimate ....................................................................................................................... 5‐15 5.5.1.5 Drainage ............................................................................................................................... 5‐16 5.5.1.6 Utilities ................................................................................................................................. 5‐16 5.5.1.7 Traffic Control Concepts ...................................................................................................... 5‐17 5.5.1.8 Multimodal Accommodations ............................................................................................. 5‐17 5.5.1.9 Access Management ............................................................................................................ 5‐17 ii Preliminary Engineering Report SR 9/I‐95 at Central Boulevard Interchange PD&E Study FM 413265‐1‐22‐1/ETDM 13748/Palm Beach County 5.5.1.10 Design Exceptions/Variations ...........................................................................................