Three Sisters Bridges

Description on this project

The bridges require rehabilitation because of accelerating age-related deterioration. The project work draws on Michael Baker’s expertise in all areas of bridge inspections, structural analysis and rehabilitation design, utility coordination, roadway and lighting design, paint evaluation, field surveys, and public involvement. As part of the structural analysis, the Michael Baker team developed a series of three-dimensional, finite-element models for the Andy Warhol Bridge using MIDAS, an engineering software specifically developed for bridge modeling and analysis. This marks the first time that the bridge is modeled in 3D. The models are used to establish the existing forces on the bridge, determine the new dead loads based on the proposed rehabilitation, calculate the modern-design live loads, and evaluate proposed construction sequencing.