I-40 / Donelson Pike (S.R. 255) Interchange · MNAA East-West Road. 1. I-40 WB Off-Ramp over...
Transcript of I-40 / Donelson Pike (S.R. 255) Interchange · MNAA East-West Road. 1. I-40 WB Off-Ramp over...
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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
Introductionof TDOT Representatives and Consultants Project Presentation Why, Where, What, How & WhenMaterialsHandouts, Plans, Displays, Video
Breakout Session for Q&A Comments & Feedback • Court Reporter Available • Comment Cards
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Purpose & 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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Congestion
Cut-through Traffic
Airport Entrance
Airport Exit
Purpose & Need Existing Airport Circulation
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Project Limits – TDOT vs MNAA
Project LimitsTDOT vs. MNAA
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Project Limits
Project Limits
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Project Limits
Project LimitsI-40
Begin Project Exit 216A
End Project West of Elm Hill Pike
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Project Limits
Project LimitsDonelson Pike SR 255
End Project South of the Parking Spot / Raceway Entrance
Begin Project Taxiway Tunnel
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Proposed Interchange Diverging Diamond (DDI)
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What is a Diverging Diamond Interchange?
• Layout Similar to Standard Diamond
• Traffic Crosses at Signal Prior to Interstate
• Divided One-Way Streets on Opposite Side
• Allows Left Turns with Opposing Thru Traffic
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Why a Diverging Diamond Interchange?
• Safety:– Reduction in collision
points.
• Operations:– Only 2 phases for each
signal.– Reduces lanes needed for
turning movements.
• Smaller Footprint:– Lowers Construction cost.– Shorter Construction
duration.1088
266
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DDI History in US and TN
89Currently Open
in the US
US 129 / W. Bessemer St.
in Alcoa5th in US
(Dec 2010)
I-40 / SR 66 (Exit 407) 51st in US (June 2015)
I-24 / Hickory Hollow Pkwy
(Exit 60) Begin
Construction Soon
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I-40 CollectorDistributor Road
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4 Bridges
4
2
Donelson Pike over I-40
3
Donelson Pike over MNAA East-West Road
1
I-40 WB Off-Ramp over McCrory Creek
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8 Retaining Walls
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PROPOSED NOISE BARRIER WALL
Tammy SellersEnvironmental 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 ends at right-of-way near flyover ramp
Barrier begins along I-40 edge
of pavement
40
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Questionnaire
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Noise Barrier Finishes
Random Cut Stone
Ashlar Stone
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Noise Barrier Finish
V-Groove Pattern
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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 2023Expected 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
Questions?