St Croix River Crossing S.P. 8221-82045 Contractor Information Meeting 15 May 2013 River Spans.

St Croix River CrossingS.P. 8221-82045

Contractor Information Meeting15 May 2013

River Spans

General Arrangement

Main Span

3360' single structural unit Expansion joints at Pier 7 and East Abutment 600' extradose spans Twin wall pier legs to address time dependent and thermal effects

Towers

Tower Sections

Tower Sections

Main Span - ReinforcingReinforcing Grade Generally grade 60, except: Verticals on crossbeam – Gr 75 Deck level stay anchor blocks Gr 75

Corrosion Protection Generally epoxy coated except: Pier 8 legs for 10' below knuckle – SS Deck top slab reinforcing – SS

Main Span - ConcreteConcrete – Substructure and Towers Generally 6000 psi @ 28 days, except: Towers 24' below to 3' above crossbeam

8000 psi @ 56 days

Concrete - Deck Generally 8000 psi @ 56 days, except: First 8 precast deck segments 9000 psi @ 180 days

Tower – Leg Reinforcing

Tower Reinfrocing

Tower Reinforcing

Tower Reinforcing

Tower - Crossbeam

Tower – Crossbeam PT

Tower - Crossbeam PT

Tower - Crossbeam PT

Tower Crossbeam Node PT

Tower Crossbeam Node Reinforcing

Tower Crossbeam Node Reinforcing

Pylon Crossbeam Node

Pylon Crossbeam Node

CIP Pier Table

Upper Tower

Tower - Anchor Box

Tower Anchor Box

Stay Cables Parallel Strand Stay Cable System All stays 76 – 0.62" stays Working at higher load than cable stays (0.52 fpu) Live end in tower Testing requirements per 6th Edition of PTI

Recommendations for Stay Cable Design Testing and Installation

Internal dampers required at lower end Damping required – 2.5% log dec – confirm by testing

Pier 13 General Arrangement

Typical Deck Section

Deck Section at Stay Anchorage

Typical Deck Section

Deck Section at Transition

Tower 8 Deck Segmentation

Tower 9, 10 and 11 Deck Segmentation

Tower 12 Deck Segmentation

Span 14 Deck Segmentation

Segments

Weights• 7.5' segments ≤ 140 tons• 8.5' segments ≤ 130 tons• Typical 10' segments ≤ 165 tons• 10 ' stay anchor segments ≤ 180 tons

Tower 8, 9, 10, and 11 Tendon Layout

Tendon Layout Span 14

Bottom Tendons – Span 14

Continuity Tendons Span 8

Typical Continuity Tendons

Continuity Tendons Spans 13 and 14

Typical Future PT

Typical Deck Segments

Typical Bulkhead

Typical Segment Reinforcing

Blisters

Transverse Deck PT

Belvederes

Belvederes - PT

Belvederes

Belvederes – Reinforcing

St Croix River CrossingS.P. 8221-82045

Contractor Information Meeting15 May 2013

River Span - Construction

Pier Table Construction

Pier Table Construction

Pier Table Construction

Global Construction Scheme

Deck Erection Pier 8

Segment Lifter

Max segment weight 180 tons Lifting frame weight 145 tons Stressing platform 17 tons Transporter 33 tons, 7 axles at 4'-3"

Segment Lifter

Deck Erection Pier 8

Deck Erection Pier 8

Deck Erection Pier 8

Deck Erection Pier 8

Deck Erection Pier 8

Deck Erection Pier 13 to East Abutment

Sequence Pier 13 to East Abutment

Deck Erection Pier 13 to East Abutment

Sequence Pier 13 to East Abutment

Sequence Pier 13 to East Abutment

Longitudinal Infill

Longitudinal Infill

Stay Strut Erection

Stay Strut Erection