Alvin M. Bopst, 49, vice president of the Marsh & McLennan insurance company in Washington, died of a coronary occlusion Sunday at his home in Fairfax.

Mr. Bopst began his career in the insurance industry as an underwriter with the old Victor O. Schinnerer Corporation in Washington in 1959. He rose to the post of assistant secretary of the company before it merged with Marsh & McLennan in 1969.

In 1972, he became assistant vice president and manager of the underwriting and marketing department with Marsh & McLennan. In February 1979, he was named senior account executive. In July 1979, he was named vice president of the company.

Mr. Bopst was a member of the Washington Metropolitan Board of Trade, the Washington Buildings Congress and the Metropolitan Washington Association of Independent Insurance Agents.

A native of Frederick and a graduate of Frederick High School, where he played varsity football and basketball, Mr. Bopst was a 1955 graduate of Western Maryland College in Westminster, where he earned a bachelor's degree in economics. He also played varsity football, basketball and tennis. He was an Army infantry officer in Korea from 1955 to 1957.

Survivors include his wife, Joan M., and two sons, Eric and Christopher, all of Fairfax, and a brother, Michael, of Frederick.