Transportation Analysis Celebration Village Snellville Development Of
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Transportation Analysis Celebration Village Snellville Development of Regional Impact #2752 Gwinnett County, Georgia February 22, 2018 MARC R. ACAMPORA, PE, LLC TRAFFIC ENGINEERING Transportation Analysis Celebration Village Snellville Development of Regional Impact #2752 Gwinnett County, Georgia study prepared for: Jacoby Development, Inc. 8200 Roberts Drive – Suite 200 Atlanta, Georgia 30350 February 22, 2018 MARC R. ACAMPORA, PE, LLC TRAFFIC ENGINEERING 858 Myrtle Street, NE Atlanta, Georgia 30308 (678) 637-1763 e-mail: [email protected] web: www.acamporatraffic.com Summary This Transportation Analysis was prepared for the Celebration Village Snellville Development of Regional Impact (DRI) #2752, in compliance with the requirements of the Georgia Regional Transportation Authority for Expedited Review due to 24-hour trip generation projections below 3,000 vpd. The project will consist of a mix of senior residential options including 140 independent living villas, 44 concierge living apartments, 55 assisted living apartments, 31 memory care apartments, 128 senior attached single-family homes, and 24 personal care beds. The front of the site will also include 30,000 ft² of specialty retail shops and an 18,000 ft² office building. Vehicular access will be provided at three full-movement accesses along the north side of Webb Gin House Road. The western and eastern accesses will be side street stop sign controlled and gated. The central access will create the fourth approach to the existing signal at Bennett Road. The mitigation identified in this study is summarized in the following table: Summary of Mitigation Identified in This Study for Compliance with GRTA Standards Condition Intersection Mitigation Required Existing 1. GA 124 / Webb Gin House Road 1. Add EB exclusive right turn lane 2. Add second WB through lane 3. GA 20 / Webb Gin House Road 1. Change EB to shared left/through and exclusive right 2. Add EB RT overlap phase No-Build 1. GA 124 / Webb Gin House Road 1. Add second NB left turn lane 3. GA 20 / Webb Gin House Road 1. Add second NB left turn lane 4. Hillside Drive / Bennett Road 1. Add SB right turn lane on Bennett 2. Add WB right turn lane on Hillside Build none none Celebration Village Snellville DRI #2752 MARC R. ACAMPORA, PE, LLC Transportation Analysis Traffic Engineering Contents SUMMARY 1. PROJECT DESCRIPTION .................................................................................................................................................... 1 1.1 PROJECT PHASING, PODS, AND LAND USES ................................................................................................................................. 2 1.2 SITE PLAN............................................................................................................................................................................. 2 1.3 SITE VEHICULAR ACCESS .......................................................................................................................................................... 4 1.4 ON-SITE PEDESTRIAN AND BICYCLE FACILITIES ............................................................................................................................. 4 1.5 TRANSIT ACCESS .................................................................................................................................................................... 4 1.6 PARKING .............................................................................................................................................................................. 4 2. STUDY NETWORK ............................................................................................................................................................ 5 2.1 PEAK TIME PERIODS AND ANALYSIS CONDITIONS ......................................................................................................................... 5 2.2 LEVEL OF SERVICE STANDARD ................................................................................................................................................... 5 3. EXISTING TRANSPORTATION FACILITIES .......................................................................................................................... 6 3.1 WEBB GIN HOUSE ROAD......................................................................................................................................................... 6 3.2 BENNETT ROAD ..................................................................................................................................................................... 6 3.3 SCENIC HIGHWAY (GA 124) .................................................................................................................................................... 6 3.4 GRAYSON HIGHWAY (GA 20) .................................................................................................................................................. 7 3.5 HILLSIDE DRIVE...................................................................................................................................................................... 7 3.6 TRANSIT SERVICE ................................................................................................................................................................... 7 3.7 BICYCLE AND PEDESTRIAN FACILITIES ......................................................................................................................................... 7 4. PROJECT TRAFFIC CHARACTERISTICS ............................................................................................................................... 8 4.1 TRIP GENERATION .................................................................................................................................................................. 8 4.2 TRIP DISTRIBUTION AND ASSIGNMENT ..................................................................................................................................... 10 5. EXISTING TRAFFIC ANALYSIS ......................................................................................................................................... 12 5.1 EXISTING LANES AND TRAFFIC CONTROL ................................................................................................................................... 12 5.2 EXISTING TRAFFIC VOLUMES .................................................................................................................................................. 12 5.3 EXISTING INTERSECTION OPERATIONS ...................................................................................................................................... 14 5.4 EXISTING FACILITIES NEEDS ANALYSIS ...................................................................................................................................... 15 6. NO-BUILD TRAFFIC ANALYSIS ........................................................................................................................................ 18 6.1 PROGRAMMED INFRASTRUCTURE PROJECTS .............................................................................................................................. 18 6.2 NO-BUILD TRAFFIC VOLUMES ................................................................................................................................................ 18 6.3 NO-BUILD INTERSECTION OPERATIONS .................................................................................................................................... 21 6.4 NO-BUILD FACILITIES NEEDS ANALYSIS .................................................................................................................................... 22 7. FUTURE (BUILD) TRAFFIC ANALYSIS .............................................................................................................................. 24 7.1 BUILD LANES AND TRAFFIC CONTROL ....................................................................................................................................... 24 Celebration Village Snellville DRI #2752 MARC R. ACAMPORA, PE, LLC Transportation Analysis Traffic Engineering 7.2 BUILD TRAFFIC VOLUMES ...................................................................................................................................................... 25 7.3 BUILD INTERSECTION OPERATIONS .......................................................................................................................................... 26 7.4 BUILD FACILITIES NEEDS ANALYSIS .......................................................................................................................................... 27 7.5 SITE ACCESS ANALYSIS .......................................................................................................................................................... 28 8. SUMMARY OF RECOMMENDED MITIGATION ............................................................................................................. 300 9. SITE INTERNAL CIRCULATION AND CONNECTIVITY ...................................................................................................... 322 10. COMPLIANCE WITH GRTA CRITERIA .......................................................................................................................... 333 10.1 GENERAL CRITERIA APPLICABLE TO ALL PROPOSED DRIS ........................................................................................................