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Permanent floating bridges are essentially boutique structures that only make sense for certain rare kinds of sites: unusually deep bodies of water and/or bodies of water with very soft bottoms, where piers are impractical.

Months of waiting are over as President Trump has finally laid on the table a detailed outline of his long-promised infrastructure investment plan, which the administration says will produce at least $1.5 trillion for transportation, water and other projects over 10 years and trim federal project permitting time to no more than two years. 

A shrinking budget deficit is usually good news, but a drop in federal debt in Canada is raising concerns over delays in government efforts to funnel infrastructure money into projects.

As Seattle’s Alaskan Way Viaduct Replacement Project heads toward a planned opening next year, Hitachi, the manufacturer of the 57.5-ft-dia tunnel-boring machine Bertha, has clarified its defense claims in the lawsuit and even shared its feelings about a snub it perceived at the breakthrough ceremony marking the progress of the work.

The Missouri Hyperloop Coalition—a public-private partnership that includes the Missouri Dept. of Transportation, the University of Missouri and other public stakeholders—announced on Jan. 30 an agreement to produce a feasibility study for a 248-mile hyperloop route, connecting Kansas City, Columbia, Mo., and St. Louis.

Three years after its much-publicized launch, Pennsylvania’s ambitious Rapid Bridge Replacement Program is well short of its goal to replace 558 structurally deficient bridges.