WSP - Complex Bridges / Arch & Cable-Supported

VERRAZZANO-NARROWS BRIDGE (Engineer of Record, O.H. Ammann) Client: Triborough Bridge and Tunnel Authority Location: New York, New York Core Services: Original Design, Rehabilitation, Biennial Inspection • Longest suspension bridge in the world when it opened in 1964. Main span 4,260 ft (1,298 m). ADT 200,000. • Suspender Rope Replacement: WSP leads in the complex analysis of jacking and load transfer. • VN-10 Rehabilitation of Anchorages: Rehabilitation, waterproofing, and dehumidification of the cables. • VN89/30 Rehabilitation of Tower Pedestals and Elevators: WSP led DB. • VN-32/49X Structural Steel Retrofit/Painting: TD/CSS. • VN-84 Master Plan and Conceptual Design, Reconstruction of the Upper Level Approaches, Connector Ramps and Belt Parkway: WSP performed LCCA and interim/full rehab timeline. • Seismic Evaluation/Retrofit: evaluate of the effects of the NYC Marathon. Used new NYSDOT/ NYCDOT seismic code. ACEC Platinum Award. • Multiple main cable strength Evaluations. Determined actual strength, vs. as-designed, recommended future work. • Inspections: Biennial 2004, Special 2005.

ROBERT F. KENNEDY (TRIBOROUGH) BRIDGE (Engineer of Record, O.H. Ammann) Client: Triborough Bridge and Tunnel Authority Location: New York, New York Core Services: Original Design, Rehabilitation, Biennial Inspection • Completed 1936, main span 1,380 ft (421 m) over the East River, connecting Manhattan, the Bronx, and Queens in New York City. ADT 164,000. • TB/RK Redecking Contracts TB-61, 63B, and 64A/B, including prototypes, new orthotropic deck for suspended spans and Bronx Kills truss spans, new lightweight precast panel decks for the remaining spans as well as a new pedestrian ramp and exit ramp to Randalls Island. • RK-04: WSP investigated relative movement between anchorage elements, using detailed inspection, monitoring, coring and structural analysis. Repair strategies were recommended. • RK-19/70 RFK Suspended Span Stringer Instrumentation, Testing/Retrofit: WSP investigated the causes of steel cracks in stringers using structural analysis; used strain gages and load testing to calibrate the models. A pilot repair program was recommended. • Main cable investigation and dehumidification system; tower hardening and cable blast and fire protection. • RK-19A: Prepared bridging documents for orthotropic deck welding repairs, barrier replacement, relocation and widening of pedestrian walkways, anchorage rehabilitation, suspended span steel repairs, pin replacements and main cable dehumidification. • Biennial Inspections: 2002, 2006, 2010, 2020, Special Inspections 2003, 2007, 2011 & 2021.

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Complex Bridges / Arch and Cable-Supported