She designed an innovative interchange in the 1960s that handled fast moving traffic in Los Angeles.

Marilyn Jorgensen was born on September 8, 1926, in Kenmare, North Dakota, to Virgil and Marion Jorgenson.

She attended Shakopee High School in Minnesota, graduating in the class of 1944 as the salutatorian.

[1] Following graduation, she moved to California, and began working for the State Division of Highways.

[3] Among the many many projects that she supervised, her most celebrated work is the iconic interchange between the 10 and the 405 freeways in Los Angeles, California.