i-40 / donelson pike (s.r. 255) interchange · 2019-08-03 · mnaa east-west road #2 & #3 –...
TRANSCRIPT
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I-40 / Donelson Pike (S.R. 255) Interchange
Design Public Meeting
October 23, 2018
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Welcome & Thank You for Attending
• Introduction of TDOT Representatives and Consultants • Project Presentation – Why, Where, What, How & When • Materials: Handouts, Plans, Displays, Video • Breakout Session for Q&A • Comments & Feedback
– Court Reporter Available – Comment Cards
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Purpose and Need
• Rapid Growth – Downtown & Surrounding Nashville Cities – Travel Demands to Nashville International Airport (BNA)
• Improve Traffic Operations and Safety – Interchange – Airport Access
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Purpose & Need – Existing Airport Circulation
AIRPORT ENTRANCE
AIRPORT EXIT
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Purpose & Need – Existing Airport Circulation
AIRPORT ENTRANCE
AIRPORT EXIT
CUT-THROUGH TRAFFIC
Congestion
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Project Limits – TDOT vs MNAA
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Project Limits
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Project Limits – I-40
Begin Project – Exit 216A End Project – West of Elm Hill
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Project Limits – Donelson Pike (S.R. 255)
Begin Project – Taxiway Tunnel
End Project – South of the Parking Spot / Raceway Entrance
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Proposed Interchange – Diverging Diamond (DDI)
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What is a Diverging Diamond Interchange?
• Layout Similar to Standard Diamond • Divided One-Way Streets on Opposite Side • Allows Left Turns with Opposing Thru Traffic
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Why a Diverging Diamond Interchange?
• Reduces lanes needed for turning movements.
• Only 2 phases for each signal. • Reduction in collision points. • Smaller Footprint
– Lowers Construction cost. – Shorter Construction duration.
10 8 8
2 6 6
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DDI History in US and TN
• 1st – US 129 / W. Bessemer Street in Alcoa – 5th in US (Dec 2010)
• 2nd – I-40 / S.R. 66 (Exit 407) – 51st in US (June 2015)
• 3rd – I-24 / Hickory Hollow Parkway (Exit 60) – Begin Construction Soon • 89 Currently Open in the US
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I-40 Collector-Distributor Road
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4 Bridges
#1 – Donelson Pike over MNAA East-West Road
#2 & #3 – Donelson Pike over I-40
#4– I-40 WB Off-Ramp over McCrory Creek
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8 Retaining Walls
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PROPOSED NOISE BARRIER WALL
Tammy Sellers Environmental Division Assistant Director
I-40 / Donelson Pike Interchange
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Discussion Items
• Proposed Noise Barrier – Location – Questionnaire – Community Side Finishes
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Larkwood Subdivision (Claridge Drive)
Barrier Length – 1,110 ft Average Height – 16 ft
Barrier ends at right-of-way near flyover ramp
Barrier begins along I-40 edge of pavement
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Questionnaire
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Noise Barrier Finish Ashlar Stone
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Noise Barrier Finish Random Cut Stone
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Noise Barrier Finish
V-Groove Pattern
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Noise Barrier Finish
Block and Fractured Fin
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Noise Barrier Finish
Grey Earth Tone
Noise Barrier Colors
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What’s Next – Estimated Schedule
• 3rd Quarter 2019 – Begin Right-of-Way Acquisition & Utility Relocation Coordination
• 4th Quarter 2020 – Contractor Selected & Begin Construction
• 4th Quarter 2023 – Expected completion of Construction
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We Need Your Input
• Comment Cards – Tonight - Drop in Box at Sign-In Table – Later – Mail to Provided TDOT Address
• Due in 21 Days – November 13, 2018
• Court Reporter – Provide verbal statement to be included in transcript
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Thank You for Attending