I-395 Reconstruction Project PAG Meeting

January 23, 2013

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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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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 a signature span design. • 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

16.5

’

23.4

’

24.0

’

25.3

’

29.6

’

20.2

’

28.5

’

Right-of-Way Plans • Total of 70 Fee

Simple Parcels and 15 Permanent Easements required for project.

• Twenty-six parcels acquired to-date.

• Right-of-way funded thru FY 2015.

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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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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 • Segmental Box • Aesthetic Viaduct

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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 = $ 740,000,000

Main Span : Wishbone Arch

• Challenges • Arches erected separately • Complicated foundation

• Overall Length • Suspended span

approximately 600 ft.

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Total Cost = $ 673,000,000

Main Span: Segmental Box • View: Aerial Looking Southeast

Main Span: Segmental Box • View: Northbound Biscayne Boulevard

Main Span : Segmental Box

• Challenges • No Aesthetic Component for

Main Span

• Overall Length • Main Span 300 ft.

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Total Cost = $ 559,000,000

Main Span: Aesthetic Viaduct • View: Aerial Looking Southeast

Main Span: Aesthetic Viaduct • Eastbound I-395

Main Span: Aesthetic Viaduct • Southwest View

Main Span : Aesthetic Viaduct

• Challenges • Fabrication of tower • Maintaining cables taut

over time

• Overall Length • Main spans approximately

300 ft.

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Total Cost = $ 604,000,000

Overall Cost Comparison

• Infinity Arch = $740,000,000 • Wishbone Arch = $673,000,000 • Segmental Box = $559,000,000 • Aesthetic Viaduct = $604,000,000

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Cross Section

Cross Section

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Pier Renderings •14th St NE

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Pier Renderings

• 14th St NE

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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: Late February 2013 • Hold Public Meeting: April 2013 • Issue Draft Request For Proposal (RFP): June 2013 • Complete Right of Way Acquisition: Summer 2015

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Visual Quality Manual

I-395 Reconstruction

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