T. Y. Lin International (TYLI), working in conjunction with the Port Authority of New York and New Jersey, provided surveying services that resulted in the development of a comprehensive three-dimensional (3D) model of the Bayonne Bridge.
The bridge, which spans the Kill Van Kull between the Bayonne Peninsula in New Jersey and Staten Island in New York, was the longest steel arch bridge at the time of its construction and has been an iconic symbol of the Mid-Atlantic Region of the United States for the past 80 years. TYLI’s preliminary survey of the bridge was used by the design team tasked with raising the bridge deck to accommodate today’s largest super freighters.
Using an innovative approach and concentrating on the two existing towers and the upper and lower arches of the Bayonne Bridge, TYLI successfully developed the 3D model in spite of a highly aggressive design timeframe. Other challenges faced by TYLI engineers included the loss of numerous prior design documents due to 9/11 and limited access to portions of the structure.
Utilizing an innovative application of new techniques, surveyors combined the dual efforts of conventional CADD preparation of structural elements and utilization of cutting-edge technology - Terrestrial Lidar. This reduced the project delivery schedule by approximately 3 months.
Logistics dictated the need for lane closures and capturing scan data from the upper arches. Surveyors developed a project work flow and specific safety plan to acquire this information, including developing a rigging system to hold the scanner as it traveled along the pipe handrail for the span of the entire upper arch. Field teams completed the entire upper arch scanning in just four days due to TYLI’s ability to place targets along the upper arch.
Deliverables included a complete point cloud model of the bridge and a 3D CADD drawing with individual structural components modeled for import into a Bridge Information Model (BrIM). This provided the design team with a virtual 3D model including actual rivet\bolt locations, allowing them to quickly share data and permitting other disciplines to work on the project simultaneously, reducing the overall schedule.
- Distinguished Engineers Award, 2013
New Jersey Alliance for Action
- National Recognition Award, 2013
American Council of Engineering Companies (ACEC)
- Engineering Excellence Diamond Award, 2013
American Council of Engineering Companies of New York (ACEC-NY)
- Engineering Excellence Distinguished Award, 2012
American Council of Engineering Companies of New Jersey (ACEC-NJ)