The National Transportation Safety Board has discovered design errors that likely explain cracks discovered in a pedestrian bridge before it opened at Florida International University, and while those errors may have led to the March collapse, no conclusion has been reached. Concrete and steel specimens that were tested met minimum requirements.

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California-based Sila Nanotechnologies is among several companies exploring the possibility of replacing graphite with silicon to trim production costs and extend driving range in electric-vehicle batteries. With a higher energy density than graphite, silicon could trim cost per kilowatt hour in electric vehicles by 30%, say researchers at Vrije University in Brussels.

The Metropolitan Council awarded Lunda/C.S. McCrossan a $799 million contract to build a $2 billion light rail in Minnesota, which could create more than 7,500 construction jobs. The Federal Transit Administration likely will provide $929 million for the project, and the council has access to $435 million in local funding, setting the stage for heavy construction to start next year.

The plan for a proposed magnetic levitation train, or maglev, that could get passengers from Washington, D.C., to Baltimore in 15 minutes took a step forward as federal authorities whittled down a list of proposed stations. The estimated cost is $12 billion to $15 billion, and an environmental impact statement should be drafted next year.

California state auditors have faulted the California High-Speed Rail Authority for mishandling construction management for the bullet train between Los Angeles and San Francisco, leading to $37 billion in additional costs. The authority began limited construction before completing agreements with local government and acquiring land, causing numerous contract changes and delays.

Speakers at the Florida Priorities Summit 2018 said Florida faces challenges from climate change, and restoration of the Florida Everglades needs to continue. Related Group Chairman and CEO Jorge Perez said developers and lawmakers must work together to ensure the sustainability of South Florida, because "sea level rise is something that is going to hit us all."

Christine Fuentes, a civil engineer with Turner Construction Co., was able to overcome a challenging background to become successful. Experts say the education system must work harder to identify students, no matter their background, who have potential at an early age, and programs like Success for All can help improve their reading ability, a key indicator of future success.

The Pennsylvania Turnpike has reduced the speed limit for a long section of the toll road due to a winter storm. Speeds were reduced to 45 mph between the Valley Forge exit and Donegal.

A Connecticut Department of Transportation study on tolling determined it would cost about $372 million to implement and generate $1 billion a year by tolling all vehicles. However, Governor-elect Ned Lamont said on the campaign trail that he would limit tolling on personal vehicles.