Construction methods

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The $242-million project to increase the tunnel's clearance for double-stack intermodal trains and improve drainage is now scheduled to complete this year.

Slow but steady growth in the use of 3D printed concrete in construction brings in new firms and users, as the nascent industry finds the right market niches for a continually evolving technology.

The EPC contractor and Quanta subsidiary plans to use dozens of the autonomous excavators to install piles for solar array foundations on projects across the country.

This 1969 image depicts a 12-story concrete core for an office building in Vancouver, Canada, that was one of the earliest examples of top-down construction.

The second deadliest dam failure in U.S. history happened suddenly. The St. Francis Dam was a 205-ft-high concrete gravity arch dam located in San Francisquito Canyon, 30 miles north of Los Angeles.<

Meta’s Rosemount, Minn., data center uses Amrize AI-optimized concrete that gains strength 43% faster and slashes embodied carbon 35%.

MIT startup Allium Engineering’s stainless-clad rebar aims to triple bridge lifespans, cut carbon emissions and resist corrosion, with Caltrans testing underway after a California pilot.

Iowa and Wisconsin are moving up demolition of the bridge that connects the two states as it is being replaced by a new span under construction just 75 ft away.

When will crews complete the first of 10 projects to build new tunnels connecting New Jersey and New York under the Hudson River?

The new state highway section uses glass aggregate, with the Wyoming DOT employing a construction manager-general contractor project delivery approach.