Henry Hudson Bridge

Description

First built in 1935, the Henry Hudson Bridge features a fixed steel arch, a double deck with a main span of 840 feet, and viaduct and approach structures on each side of the arch span. Upon inspections conducted by the Triborough Bridge and Tunnel Authority (TBTA), it was concluded that the substructures of the bridge had presence of Alkali-Silica Reaction that caused cracking at four of the skewbacks, sixteen concrete bent pedestals, and the lower level north abutment. In February of 2016, TBTA released a bid for the design-build rehabilitation of skewbacks, viaduct piers, and lower level north abutment at the Henry Hudson Bridge. The project was awarded to Tutor Perini Corp in the first quarter of 2017.

Scope

The scope of work involved the design, fabrication, and installation of a structural system to provide an alternate load path to support the existing steel arch superstructure. AEIS performed construction inspections and construction material laboratory testing. AEIS’ New York State Professional Engineer oversaw day-to-day activities to ensure project specifications, codes, and quality standards were met.

• SNT-TC-1A Level II-certified non-destructive testing (NDT) technicians performed magnetic particle, ultrasonic, and dye penetrant testing.
• AWS-certified welding inspectors performed structural steel welding inspections.
• ACI-certified  field and lab technicians performed all concrete and rebar inspections.
• HMA-certified technicians performed asphalt inspections.
• NICET-certified Level II and IV technicians performed soil inspections.
• ICC-certified structural steel and bolting inspectors performed high-strength bolting inspections.
• Codes utilized: Applicable AASHTO, ACI, and ASTM standards.