Sound Barriers A Noise Impact Assessment was prepared to analyze the effects of highway traffic noise on communities within the project limits. Sound barriers were evaluated as a way of reducing or eliminating noise impacts to the affected public and were found to be feasible. Forty-three (43) sound barriers were found to be feasible and reasonable to reduce noise impacts. Sound barriers are constructed within Georgia DOT right-of-way, not on private property. The maximum height of a noise wall is 30 feet. Sound barriers must provide at least a 5 decibel reduction for the locations affected by noise impacts. The proposed sound barriers would be constructed of a light-weight concrete material with a textured finish, as shown in the photo below. The sound barriers may also be earthen berms or combination berm/wall systems. Georgia DOT is seeking input from individuals who benefit from the construction of sound barriers. The sound barriers will not be constructed if a majority of the benefited public does not want the sound barrier. Please provide your vote on the sound barriers by completing the voting ballot available at this meeting. LEGEND SIX ES RD Holly Springs Sixes Rd. General-Purpose Interchange Managed-Lane Interchange OW LAKE PKW TOWNE Slip Ramp Southbound Y CHEROKEE Slip Ramp Northbound Towne Lake Pkwy. 92 Woodstock Old Alabama Rd. Main Arterial/ Collector ALABAMA RD OLD 5 75 Interstate Highway 92 Hickory Grove Rd. SHA Wade Green Rd. •Extension of existing HOV system to RD D FERRY R WAD E GREEN RD LLS BE Chastain Rd. Chastain Rd. RD N CANTO RD Bells Ferry Rd. Big Shanty Rd. IN 41 A ST A Big Shanty Rd. CH managed lane tie-in BARRETT PKW Y Barrett Pkwy. Barrett Pkwy. COB B PK W Y I-575 •Managed lane interchanges are CTR CN NE CA NTO N Kennesaw LO WF OR D L 575 •Reversible managed lane system on I-75 would consist of two lanes from I-285 to I-575 and one lane from I-575 to Hickory Grove Rd. Shallowford Rd. Acworth PROJECT LOCATION AL LG Canton Connector D OO proposed on I-75 at I-285, Terrell Mill Rd., Roswell Rd., I-575, Big Shanty Rd. and Hickory Grove Rd. RD 120 RO SW EL L RD PKWY Roswell Rd. . MAR IETTA S.SMarietta Pkwy. PK RS FER RY WY DELK RD Delk Rd. RD WY PK E RR TE SE I-575 from I-75 to Sixes Rd. would consist of one lane in the median er R iv LL tta ha h Terrell Mill Rd.C 41 285 RD L EL ST AU •Slip ramp access on I-575 located D WINDY LL HI Y N WI I-285 GE RID WY PK AKER SM RD ILL WindyRHill Rd. D ER WD PO GS RIN SP •Reversible managed lane system on RD RD BB CO COBB RD E W PO Marietta ELL SW RO LOW ER MILL DALLAS HWY c he e 120 oo N. Marietta N. MARIPkwy. ETTA Akers Mill Rd. Smyrna in the vicinity of Barrett Pkwy, Shallowford Rd. and Sixes Rd. Rev. 3/10 S FULTON BB CO DR 75 285 0 1 3Miles THE SELECTED ALTERNATIVE •Two reversible managed lanes on the west side of I-75 between I-285 and I-575 •One reversible managed lane on I-75 between I-575 and and Hickory Grove Rd. •One reversible managed lane on I-575 between I-75 and Sixes Rd. TOLLING •Variable pricing employed to manage the use of the lanes at 45 mph free flow speed •Open Road tolling •Use of transponders and video tolling •No toll booths •The Managed Lane system will be operated as an Express Toll Lane (ETL) system I-75 TYPICAL SECTIONS PROPOSED I-75 REVERSIBLE MANAGED LANES 10' SHLDR 12' 12' 2' SHLDR EXISTING I-75 SOUTHBOUND GENERAL PURPOSE LANES ON BRIDGE EXISTING I-75 NORTHBOUND GENERAL PURPOSE LANES I-75 TYPICAL SECTIONS BETWEEN DELK ROAD AND SOUTH 120 LOOP PROPOSED I-75 REVERSIBLE MANAGED LANES 10' SHLDR ON WALLS 12' 12' 2' SHLDR EXISTING I-75 SOUTHBOUND GENERAL PURPOSE LANES EXISTING I-75 NORTHBOUND GENERAL PURPOSE LANES MECHANICALLY STABILIZED EARTH WALLS I-75 TYPICAL SECTIONS BETWEEN DELK ROAD AND SOUTH 120 LOOP I-75 AND I-575 TYPICAL SECTIONS EXISTING I-75 SOUTHBOUND GENERAL PURPOSE LANES PROPOSED I-75 REVERSIBLE MANAGED LANE 10' SHLDR 12' EXISTING I-75 NORTHBOUND GENERAL PURPOSE LANES 4' SHLDR I-75 TYPICAL SECTION NORTH OF I-575 EXISTING I-575 SOUTHBOUND GENERAL PURPOSE LANES EXISTING I-575 NORTHBOUND GENERAL PURPOSE LANES PROPOSED I-575 REVERSIBLE MANAGED LANE 10' SHLDR 12' 4' SHLDR I-575 TYPICAL SECTION NORTH OF I-75 Roswell Road Managed Lane Interchange (AM Operation) This is an artist’s rendering and may not be representative of the final design. 13 Roswell Road Managed Lane Interchange (closed for reversal) This is an artist’s rendering and may not be representative of the final design. 14 Roswell Road Managed Lane Interchange (PM Operation) 15 This is an artist’s rendering and may not be representative of the final design. Managed Lane Interchange on I‐75 at Big Shanty Road This is an artist’s rendering and may not be representative of the final design. I 575 Slip Ramp Operation I‐575 Slip Ramp Operation This is an artist’s rendering and may not be representative of the final design. 16
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