Presentation to Citizens Transportation Advisory Committee of the - - PowerPoint PPT Presentation

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Presentation to Citizens Transportation Advisory Committee

• f the

Metropolitan Planning Organization

February 20, 2013 FDOT DISTRICT 6

Existing Conditions/Deficiencies

• Safety and Operational Issues: poor horizontal and vertical geometry, lane

continuity, etc.

• Entrances/Exits Ramps: undesirable left hand entrance/exit ramps
• Weaving: competing movements in a very short distance
• Access: poor access to and from I-395
• Clearances: low clearance from local streets to I-395

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PD&E Recommendations

• Record of Decision (ROD) issued by FHWA on July 16, 2010
• Alt. No. 3 approved as selected alternative
• Improved geometric design
• Eastbound and westbound elevated connector facilities
• Right hand entrance and exit ramps to mainline

Begin Project End Project

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Commitments

• Roadway vertical clearance west of FEC should be a minimum of 19

feet and east of FEC a minimum of 25 feet.

• A minimum of 200 feet between the I-395 westbound bridge and the

Adrienne Arsht Center for the Performing Arts (AACPA) will be provided.

• A minimum of 225 feet of column span length will be provided.
• The Department commits to providing an aesthetically pleasing

bridge.

• The

Department will provide aesthetics enhancements (e.g. landscaping) to help maximize the total integration of the project with the adjacent community.

• Reconnect NW 2nd Avenue .

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Refinements to Alternative

• Approved by FDOT D6 June 2012
• Added additional thru lane in each direction from 2L to 3L.
• Eliminated most design exceptions and variations.
• Improved interchange at North Miami /NE 1st Aves. with I-395.
• Length of “Aesthetic Pleasing Bridge” is approximately 600 feet total length.

Begin Project End Project

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Proposed Plan & Profile

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NW 3 AVE NW 2 AVE FEC RR MIAMI AVE NE 1 AVE NE 2 AVE BISCAYNE BLVD METROMOVER 19.0’ 23.4’ 24.0’ 25.3’ 29.6’ 20.2’ 28.5’

RAMPS AT N MIAMI / NE 1 ST AVE

Right-of-Way Impacts

• Total of 70 Fee Simple Parcels and 15 Permanent

Easements required for project.

• Twenty-eight parcels acquired to-date.
• Right-of-way funded thru FY 2015.

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Public Involvement

• Initial presentation to the MPO on December 8, 2011
• Five Technical Advisory Committee (TAC) and Four Project

Advisory Group (PAG) meetings held to-date.

• Two presentations to Miami-Dade County’s Transportation

Aesthetic Review Committee (TARC)

• Project meetings with City of Miami, City of Miami Beach,

Downtown Development Authority (DDA) and Miami Community Redevelopment Agency (CRA)

• Website and Project Branding
• Outreach office- 1015 NW 3 rd Ave, Miami
• Public workshop- April 2013

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Visual Quality Process

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• Objectives: Balance Cost, Engineering,

Architecture, Constructibility and Community Expectations

• Steps Taken:
• Developed Corridor Character
• Received Input from TAC, PAG and Community
• Established Selection Criteria
• Developed Bridge Type Alternatives

Bridge/Structures Design

• Main Span ~ 600 ft x 2 = 1,200 FT
• Main Span Length was optimized to manage total project construction

cost

• Avoid curved alignment
• Main Span Approaches ~ 8,000 ft
• Connectors & Ramps ~ 11,000ft

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Approach Structures

• Box Girders (Single or dual box)

11 Approach Span – 10ft deep Girder Approach Span – 8ft to 17.5ft varying depth Girder

Main Span Designs

• Fifteen different design concepts presented to TAC and

PAG

• TAC- FDOT District 6 and Central Office
• PAG- Major Stakeholders within project area
• Based on five TAC and four PAG meetings held, the

following four designs have been recommended:

• Infinity Arch
• Wishbone Arch
• Aesthetic Viaduct
• Segmental Box

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Main Span : Infinity Arch

• View : Looking East

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Main Span : Infinity Arch

• Challenges
• Complicated construction

sequence

• Will require additional

phases to MOT

• Overall Length
• Suspended span

approximately 690 ft.

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Total Cost = $ 739,577,926

Main Span : Wishbone Arch

• View : I-395 WB

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Main Span : Wishbone Arch

• Challenges
• Arches erected separately
• Complicated foundation
• Overall Length
• Suspended span

approximately 600 ft.

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Total Cost = $ 672,662,651

Main Span : Aesthetic Viaduct

• View : Southeast towards Biscayne Bay

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Main Span : Aesthetic Viaduct

• Challenges
• Fabrication of tower
• Maintaining cables taut
• ver time
• Overall Length
• Suspended spans

approximately 300 ft.

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Total Cost = $ 604,280,740

Main Span : Segmental Box

West along Biscayne Boulevard towards AACPA 19 PortMiami Bridge (segmental Box) Nighttime

Main Span : Segmental Box

• Overall Length
• Main Span 300 ft.

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Total Cost = $ 559,365,990

Schedule of Milestones

• Survey: Completed
• Soil Testing: Completed
• Traffic Analysis: Completed
• Alignment: Completed
• Public Involvement: On-Going
• Draft Preliminary Plans: Submitted November 2012
• Bridge Development Report (BDR)
• Visual Quality Manual (VQM)
• Various Component Sets
• Final Preliminary (15%) Plans: April 2013
• Hold Public Meeting: April 2013
• Issue Draft Request For Proposal (RFP): June 2013
• Complete Right of Way Acquisition: Fall 2014

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Questions?

I-395 Reconstruction

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Main Span : Segmental Box

West along Biscayne Boulevard towards AACPA 23 PortMiami Bridge (segmental Box) Nighttime