10 Trailblazing Women in Engineering Who Redefined the Field

In modern developed nations, countless girls and young women have access to advanced mathematics and science programs, along with strong encouragement to explore careers in engineering and technical disciplines. This wasn't always the case. Decades ago, the women who forged paths in these fields often lacked both opportunities and support. Despite these challenges, they revolutionized the world of science in countless innovative ways.

Some women discovered their talent for bridge, dam, and manufacturing design by nurturing a passion for technical, mechanical, or electrical pursuits. They boldly entered engineering schools and technical professions, working alongside men in areas where women had never ventured before. Often, they faced additional hurdles due to family obligations and economic struggles.

Many female pioneers were driven by a desire to expand career and academic opportunities for women. Others were simply passionate about engineering, inventing new tools, or developing innovative processes—and they happened to be women. Let's introduce the first of these remarkable figures.

10: Martha Coston

At just 21 years old, a widowed mother of four found a way to support her family while contributing to the Civil War effort. She achieved this by inventing a signaling system that allowed ships to communicate their positions both on land and at sea.

Following her husband's passing, Martha J. Coston (1826-1904) sought a means to provide for her family. She turned to a design he had sketched in a notebook, which she refined by incorporating pyrotechnic elements. This innovation resulted in a durable, multicolored flare system.

After extensive development and testing, Coston patented her Night Signals system in 1859. The U.S. Navy purchased the rights for $20,000, and she also secured the manufacturing rights. Her three-light design, a triumph of timely engineering, is credited with aiding the North's victory in the war. Additionally, her system became a global standard for night navigation among shippers and yachtsmen, keeping her company operational well into the 1970s [source: Engineer Girl].

9: Lillian Gilbreth

Improving workplace efficiency and comfort isn't solely the responsibility of employers. Many organizations bring in experts to assess office and factory environments, offering suggestions for optimal workflows and setups. Ergonomics takes this a step further by equipping workspaces with tools and furniture designed to enhance productivity and ensure employee safety.

Lillian Gilbreth (1878-1972) revolutionized industrial engineering by analyzing work patterns and proposing improvements, from task sequencing to workspace layouts and furniture design. She earned her doctorate in industrial psychology from Brown University in 1915, becoming a trailblazer in her field. In 1926, she was the first woman admitted to the American Society of Mechanical Engineers, and in 1935, she became the first female professor at Purdue University's School of Engineering.

Gilbreth pioneered human factors engineering and ergonomic design, earning the title "Mother of Modern Management." Remarkably, she achieved all this over an 80-year career while raising 12 children—a testament to her extraordinary organizational skills [sources: ASCE; SDSC].

8: Marilyn Jorgensen Reece

A highly frequented stretch of highway in the U.S. was designed by a woman who pursued engineering out of her love for mathematics and her desire to avoid a teaching career. Marilyn Jorgensen Reece (1926-2004) broke barriers by becoming California's first fully licensed female civil engineer in 1954. She was also responsible for designing the San Diego-Santa Monica freeway interchange in Los Angeles, a significant achievement in a male-dominated field.

Reece's spiral design for the I-10 and 405 interchange is praised for its aesthetics, but she emphasized the engineering principles behind its curves, aimed at maintaining traffic flow by allowing drivers to sustain speed. Reece also noted that, as a woman in engineering, she faced minimal obstacles, thanks to the support of her male colleagues [sources: McLellan; ASCE].

7: Beatrice A. Hicks

Beatrice Hicks (1919-1979) was a trailblazer who excelled in multiple engineering disciplines. After earning her bachelor's degree in chemical engineering in 1939, she joined Western Electric, a division of Bell Telephone, where she contributed to advancements in aerospace communications and telephone technologies.

During this period, Hicks pursued electrical engineering courses at Columbia University and later obtained a master's degree in physics from Stevens Institute of Technology in 1949.

Following her father's passing, Hicks assumed control of the family business, where she developed innovative technologies for heating and cooling systems, broadening her expertise into environmental engineering.

While Hicks accomplished remarkable feats and excelled across various engineering disciplines, she acknowledged that her opportunities as a woman were partly due to the vacancies created by men serving in World War II and her role in a family business that valued her technical skills. Dedicated to creating opportunities for other women, she co-founded the Society of Women Engineers in 1950, an organization that now boasts members globally [source: IEEE].

6: Edith Clarke

Few women in history have played a role in designing dams, but Edith Clarke (1883-1959) pioneered the application of advanced electrical engineering principles to dam construction in the western United States.

Clarke made history as the first woman to earn a master's degree in electrical engineering from MIT and the first female fellow of the American Institute of Electrical Engineers (AIEE). Her journey into higher education began after she was orphaned and used her inheritance to study at Vassar College.

After graduating from Vassar and before enrolling at MIT, Clarke worked in computing at AT&T. She spent 26 years at General Electric Co. (GE), where she became a salaried engineer in 1922, a rare achievement for women at the time. Clarke earned accolades for her research papers and secured a patent for a specialized calculator. After retiring from GE, she broke another barrier by becoming the first female faculty member in the engineering department at the University of Texas, Austin.

An impressive resume for an orphaned girl from a small Maryland town [source: IEEE].

5: Kate Gleason

Kate Gleason (1865-1933) made history as the first woman admitted to Cornell University's Mechanical Arts engineering program and the first female member of the American Society of Mechanical Engineers (ASME). Despite not completing her degree, she left college to support her family's machine shop, where she had worked since age 11. Gleason not only saved the business during a crisis but also helped expand it into the globally recognized Gleason Corporation. Her engineering expertise and sales acumen took her across Europe, where she marketed machinery and contributed to engineering design.

While working in manufacturing, Gleason initiated her own project to design affordable housing for workers. She pioneered a poured concrete technique and authored an article titled "How a Woman Builds Houses to Sell at a Profit of $4,000." Her engineering innovations and business savvy allowed her to promote her housing ideas across the U.S. and internationally [source: Giges].

4: Elsie Eaves

Engineers require strong numerical and mathematical reasoning skills, and Elsie Eaves (1898-1983) excelled in these areas while also mastering database creation—without the use of computers. Eaves graduated with a civil engineering degree from the University of Colorado in 1920 and worked on highway, railway, and public roads projects. However, her most notable contribution was in data collection and reporting. Starting in 1926 at Engineering News-Record, she led a team of reporters to track construction trends and spending, compiling detailed business reports that later informed governmental and municipal planning for urban housing, new construction, and industrial sewage systems.

Her construction inventories gained widespread recognition and became essential resources for researchers, particularly those seeking data to support post-Great Depression construction projects. Eaves was honored as the first female member and later a life member of the American Society of Civil Engineers (ASCE) [sources: Engineer Girl; University of Colorado at Boulder].

3: Mary Walton

Little is known about Mary Walton's life, including how she mastered environmental engineering without formal training, long before it became a recognized field. However, her two famous patents highlight her innovative approach to solving Industrial Age challenges through hands-on experimentation and model-building at home.

As manufacturing boomed in the mid- to late-19th century, air pollution became a pressing issue. Around 1879, Walton developed a system to reduce emissions by redirecting them into sewage waters instead of releasing them into the air. After patenting this invention, she tackled noise pollution by creating a prototype in her Manhattan basement to muffle the sounds of city trains. Her wall-based noise reduction system proved effective on a larger scale, and she sold the patent to the New York City Metropolitan Railroad. Similar systems were adopted by rail lines across the country [source: MIT].

2: Ellen Henrietta Swallow Richards

Modern civilization owes much of its success to effective sanitation. Long before the Romans revolutionized plumbing and sewage systems, humanity grappled with ensuring clean water and safe food. Ellen Henrietta Swallow Richards (1842-1911) made history as the first woman to graduate from MIT, not only in chemistry but in the institution's entire history. She contributed to public health, sanitary engineering, mining engineering, and chemistry, but her most enduring legacy is as the founder of home economics.

While modern home economics may focus on household management, Richards pioneered the teaching of safe food practices, affordable meal planning, and efficient home care. She championed school lunch programs and the inclusion of home economics in public education. Richards combined her scientific expertise with a dedication to improving the lives of homemakers [source: ASCE].

1: Emily Warren Roebling

It took just one lawyer to complete the construction of the Brooklyn Bridge: Emily Warren Roebling (1843-1903). Despite lacking an engineering degree—she held a law degree from New York University—Roebling played a pivotal role as an engineering manager, ensuring the bridge's design, initiated by her father-in-law and husband, was successfully finished.

After her husband fell ill and could no longer oversee the bridge project following his father's death, Roebling took charge. She meticulously documented progress, communicated objectives to workers and financiers, and taught herself civil and construction engineering. When delays threatened the project and her husband's role as head engineer was questioned, Roebling successfully defended their leadership to the American Society of Civil Engineers (ASCE). Her efforts earned her the title of the "silent builder" of the Brooklyn Bridge [source: ASCE].