USA

In the 19th century, New York City was a burgeoning industrial and commercial metropolis - the largest city in the United States and second largest in the world. As the city's population increased, people began to call for construction of an underground railway. Many unusual engineering…

"Some of New Hampshire's most aesthetically pleasing yet least appreciated structures are stone arch bridges."

From: Stone Arch Bridges of the Contoocook River Valley, New Hampshire Profiles, May, 1978 by Raymond Gibson 
 
These five bridges, Carr Bridge (mid 1800's), Gleason…

The Granite Railway Company of Quincy was the first commercial railway in the United States. Incorporated in 1826 and designed by Gridley Bryant, the railway relied on horses, rather than steam locomotives, to draw the cars along the tracks. Its primary purpose was to transport granite from…

When first proposed in 1819, the Hoosac Tunnel seemed so logical. It would provide an efficient and direct route for the Boston and Albany Railroad, whose pathway meandered 20 miles along precipitous grades. Early proponents, however, could not have imagined that blasting a 4.75 mile tunnel…

A transportation tunnel under the Hudson River connecting Manhattan and New Jersey was first considered in the 1860s, fueled by New York City's rapidly growing congestion and the inadequacy of existing ferry service to population centers across the river. DeWitt Clinton Haskin, an engineer…

One of the earliest and most impressive of America's great railroad engineering feats, the Horseshoe Curve was built as a means of overcoming a straight-line grade over the geological feature known as the Allegheny Escarpment or Allegheny front, which separates the ridge-and-valley section of…

Morris Canal was built to transport coal from the Lehigh Valley of Pennsylvania to industrial markets in Newark and New York. The total length of the canal was 106 miles. The canal climbed an astonishing 914 feet from Newark Bay to the summit at Lake Hopatcong, and then dropped 760 feet to the…

The Hydraulics Laboratory at The University of Iowa, renovated in 2001 and in 2003 renamed the C. Maxwell Stanley Hydraulics Laboratory, is the oldest university-based hydraulics laboratory in the U.S. that continuously has focused on research, education, and service in hydraulic engineering.…

William Emory was an 1831 graduate of the U.S. Military Academy at West Point. When the Mexican War broke out, he was assigned as chief engineer officer to General Stephen Kearny, whose army traversed largely unknown territories in the West. The U.S. War Department would later print 10,000…

The Watervliet arsenal complex originally was built to house and manufacture weapons for the War of 1812. During the Civil War, it specialized in gun cartridges and artillery carriages. The facility today is a primary site for making state-of-the-art tank cannon, howitzers, mortars, and…

"May God continue the unity of our Country as this Railroad unites the two great Oceans of the world."  
- Inscription on the ceremonial Golden Spike 

The symbolic Golden Spike, staked in Promontory, Utah in 1869, marked the completion of the first transcontinental railroad,…

After more than 50 years of contention and debate, dredging began in 1911 on an eight-mile channel connecting Puget Sound, Seattle's gateway to the Pacific, to two inland freshwater lakes, Lake Washington and Lake Union. With the completion of the Lake Washington ship channel and Chittenden…

San Antonio's River Walk, a catalyst for abundant commercial and tourism enterprise, is generally regarded by cities and urban planners throughout the world as a prototype for the development of urban riverfront sites. The River Walk's success, however, would not have been possible without a…

In the years following the Civil War, the land west of the Mississippi River was being settled and the Pacific Northwest explored. There remained, however, a large portion of Montana, Idaho, and Washington that contained enormous quantities of timber and minerals, but was not accessible by rail…

The tower was designed to rest on a continuous reinforced concrete mat, 4 feet thick, with the base of the slab 24 feet below street level.

What makes the Texas Commerce Bank Building revolutionary in the civil engineering world is not so much the building itself, but its foundation. …

"Who in Europe, or in America for that matter, knows that Kansas City is one of the loveliest cities on earth? [...] the residential section is a masterpiece of city planning [...]; Few cities have been built with so much regard for beauty."  
- Andre Maurois, French author and lecturer…

The 1.5 mile Lacey V. Murrow Bridge was the largest floating structure in the world and the first to be built of reinforced concrete when completed in 1940.  The bridge consisted of typically 300-foot long pontoons floated to site and rigidly connected to form a continuous structure and…

The Chamberlain is the only surviving bridge of the original five. The others were replaced as the river rose due to flood control dams put in place over time.

For its first 30 years of statehood, South Dakota was effectively two states. The Missouri river cut across the land forming a…

In 1915, a tropical storm dropped nearly 11 inches of rain on St. Louis in just 17 hours, causing a devastating flood. Claiming 11 lives and the homes of 1,025 families, the flood focused public and government attention onto the problems of the river. 

In the early 1900s, St. Louis…

The voyage of Captain George Vancouver, 1791 -1795, was commissioned by the British Admiralty to map in detail the west coast of North America from Mexico to Alaska and to meet with Spanish authorities on the coast to enforce the terms of the Nootka Sound Convention of 1790. 

Departing…