Client| City of Los Angeles

2018 - 2019 | $10 Million

The project consisted of constructing a ~325 feet long and ~35 feet wide cable-stayed bridge with two separate paths, one for pedestrian/ cyclists, and one for equestrians requiring a single concrete pier to be placed in the LA River, and two abutments constructed at each end of the bridge. The non-motorized bridge is located ~ ½ mile north of Los Feliz Boulevard, connecting the two banks of the Los Angeles River. The bridge construction included shock transmission units, tune mass dampers, and single mast structure.

 

ZTC scope of work included assisting the City Construction Manager and Engineer of Record in developing material specification, material verification testing scope, auditing material test results, reviewing contractor quality control plans, responding to RFIs and recommendations for material substitutions for steel fabrication, bridge welding, structural fasteners and steel coating. Additionally, ZTC provided specific test protocols for mass tune dampers, stayed-cable system, and shock transmission units.

ZTC developed material QA verification testing and accepting criteria for structural steel replacement. In addition ZTC worked closely with the designer to developed QC/QA NDE inspection testing scope and frequency for structural steel fabrication. Part of ZTC scope was witnessing various structural components tested at the fabrication shops and laboratories across United States, such as cable stays, wires, STU, and TMD. ZTC QA steel inspectors performed facility audits, welding inspection, NDE verification, QC records audit, Welding QC Plan Reviews, WPS/PQR reviews, and QC Inspection Report review.

 

By creating an open line of communication between the fabricator and designer, ZTC was able to support the CITY to deliver the project on-time and within the schedule.