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Engineering Innovations

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Title Description
Rocky River Pumped-storage Hydroelectric Plant Rocky River Pumped-storage Hydroelectric Plant
Hartford, CT
The Connecticut Light & Power Company pioneered the use of pumped storage in the United States at this hydroelectric station. First operated in 1929, the Rocky River Plant had…
Delaware Aqueduct of the Delaware & Hudson Canal Roebling's Delaware Aqueduct
Minisink Ford, NY
The Delaware Aqueduct provided an important transportation link between the Pennsylvania's coalmines and New York's booming industrial marketplace. It is the earliest surviving…
Rogue River Bridge Rogue River Bridge
Gold Beach, OR
The Rogue River Bridge was the most advanced concrete bridge in America when it was built. Distinguished bridge engineer Conde McCullough employed the techniques of Frenchman…
Roll Over Protection Structure (ROPS) Roll Over Protection Structure (ROPS)
Cedar Falls, IA
The First Agricultural Tractor Roll-Over Protection Structure (Rops) In The USA Resulted From Research By Lloyd H. Lamouria, Ralph R. Parks And Coby Lorensen At The Agricultural…
Emanuel Bowen's 1747 map showing the boundary between Virginia and North Carolina. Royal Colonial Boundary of 1665
Middlesboro, KY
The Royal Colonial Boundary of 1665 was decreed by England's King Charles II to demarcate his American colonies. It provided a survey from the Atlantic Ocean to the Mississippi…
Rubber Tractor Tires Rubber Tractor Tires
Orange, VA
Early tractors were massive and expensive. Their steel lug wheels gave poor traction and a rough ride. Lugs were prohibited on many roads. 1926 Hoyle Pounds modified a Fordson…
Rumely Companies' Agricultural Products Rumely Companies' Agricultural Products
La Porte, IN
Beginning with the blacksmith shop of German immigrant Meinrad Rumely (1823-1904), this successive family of firms invented and produced a line of agricultural equipment that…
Rumely OilPull Tractor Rumely OilPull Tractor
La Porte, IN
The Rumely Companies, which operated in La Porte, Indiana, from 1853 to 1931, produced a variety of equipment including threshers and steam engines, which helped to change the…
Rumford Baking Powder Rumford Baking Powder
Rumford, RI
Bread is considered a basic foodstuff; eaten down through the ages, it continues to be a staple of the modern diet. The development of baking powder made baking easier, quicker…
Salginatobel Bridge Salginatobel Bridge
Schiers, Graubünden
The Salginatobel Bridge, spanning the Salgina Valley ravine, is the earliest surviving three-hinged, hollow box arch bridge designed by  Robert Maillart. Maillart's 1901…
Samson Mine Reversible Waterwheel & Man Engine Samson Mine Reversible Waterwheel & Man Engine
Sankt Andreasberg, Lower Saxony
This silver mine preserves two features of bygone practice. One is the reversible waterwheel of the ore-hoist, which originally was installed in 1565 and currently dates back to…
San Antonio River Walk & Flood Control System San Antonio River Walk & Flood Control System
San Antonio, TX
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…
San Francisco - Oakland Bay Bridge
Oakland, CA
Ever since the Gold Rush days of the 1850s, San Francisco Bay area residents and businesses had lobbied for a bridge joining San Francisco and Oakland. Early studies indicated…
San Jacinto Monument San Jacinto Monument
Houston, TX
The San Jacinto Monument commemorates the decisive 1836 battle near the banks of the Buffalo Bayou and the San Jacinto River that allowed Texas to win independence from Mexico. It…
Saturn V Rocket Saturn V Rocket
Orlando, FL
The largest rocket built at the time of the historic first missions to the moon, the Saturn V carried aloft the 45-ton Apollo spacecraft on earth orbital and lunar missions from…
Saugus Ironworks Saugus Ironworks
Saugus, MA
The Saugus Ironworks, the first commercial ironworks in North America, was an impressive technological achievement for an early colony. The same basic processes are used today:…
Sault Ste. Marie Hydroelectric Complex Sault Ste. Marie Hydroelectric Complex
Sault Ste. Marie, MI
Located at the northern tip of Michigan where Lake Superior, Lake Michigan, and Lake Huron join together, the Sault Ste. Marie Hydroelectric Power Complex was built to harness the…
Charles Herty Savannah Pulp and Paper Laboratory (Charles Herty)
Savannah, GA
When Georgia chemist Charles Holmes Herty found a way to make quality paper from pine trees in 1932, he also founded an industry that brought much-needed jobs to the depression-…
Scoates Hall, TAM Scoates Hall, TAM
College Station, TX
Scoates Hall 1932 A Historic Landmark of Agricultural Engineering Named for Daniels Scoates Designer of this Building Professor and Head Department of Agricultural Engineering…
Second Street Bridge Second Street Bridge
Allegan, MI
The Second Street Bridge is a simply ornamented, wrought-iron structure. It is 18 feet wide and spans 225 feet over the Kalamazoo River. It was built to replace a dilapidated…

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