This 1933 cover photo shows workers maneuvering a bomb into position on a platform in San Francisco Bay, at a very early stage of the Golden Gate Bridge project.

This ominous-looking machine partially immersed in the Missouri River was the world’s largest suction dredge when it was introduced.

ENR is celebrating its 150th anniversary this year. In connection with this milestone we will be showcasing early cover images on a monthly basis.

Finding accurate subsurface surveys of bedrock topography is a time consuming process that can be augmented with A.I., say experts sharing recent success stories.

Rail construction and a wealth of civil site skills in several sectors have paved the way to prosperity for the open-shop firm.

Trench-cutting machine keeps project on course after remains of 18th-century ships discovered on site

With levels in Lake Mead declining, the regional water authority had to build a low-level pumping station to guarantee water access

It took a modern Trench cutting methods and Remixing Deep (TRD) machine to help excavate three 18th-century sailing ships at the Robinson Landing site on the Alexandria, Va. waterfront.

Late in July, crews completed the up-to-85-ft-deep excavation for the 850-ft-tall Rainier Square Tower after workers installed a secant pile foundation wall, supported laterally under the neighboring 514-ft-tall high-rise by eight rows of 262 drilled tieback anchors.