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NCHRP Web-Only Document 428: Quality Management for Digital Model–Based Project Development and Delivery, from TRB’s National Cooperative Highway Research Program, addresses two key challenges for state departments of transportation and other highway agencies: the use of 3D models as a new way to review construction designs and the review of the 3D models themselves. Quality […]
Researchers, policymakers, practitioners, and transportation-industry leaders are exploring how additive manufacturing (commonly referred to as 3D printing) and construction technologies can accelerate innovation in transportation infrastructure. Among the impacts being evaluated are supply chains, logistics, infrastructure resilience, and workforce development. TRB Conference on Advancing Additive Manufacturing and Construction in Transportation
Grouted tendons are predominantly used for post-tensioned concrete bridge elements in the United States. However, because of potential durability issues with grouted tendons, some highway agencies have opted to use ungrouted tendons for post-tensioning to facilitate replacement. NCHRP Research Report 1139: Considerations for the Design and Construction of Bonded and Unbonded Post-Tensioned Concrete Bridge Elements, […]
This report identifies common issues that result in change orders and cause project delays and overruns, organized into three main categories relating to the quality of technical project development work, influences of organizational culture, and uncertainty introduced by financial forces. It also describes best practices to minimize and mitigate change orders and highlights noteworthy project […]
ALDOT continues to make steady progress on the new Intracoastal Waterway Bridge in Gulf Shores, a $52 million project designed to ease traffic congestion and improve safety in the area. Alongside the bridge, a $30 million connector project to tie into SR-161, formerly designated as the Foley Beach Express, is also underway. Both projects are […]