Montreal, Maine & Atlantic Railway has promoted Melody A. Sheahan from director engineering administration to vice president Engineering, effective March 15, at the railway's headquarters in Hermon, Maine. She succeeds Thomas R. Klemm, who resigned to join another railroad.

Stephen C. Arnold has been named director roadway maintenance, a newly created position, effective April 1.

Ms. Sheahan has served as director engineering administration since January 1, 2005, when she joined MMA. Her previous rail experience was in the Engineering departments at CSX Transportation and Amtrak, where she was senior manager, maintenance, planning and integration and director of special projects from 1997 to 2001. She subsequently was general manager at On Track-On Line -- a railroad consulting firm based in McMurray, Pa.

Ms. Sheahan earned her undergraduate degree in business administration at Marshall University, Huntington, W. Va. and an MBA in Finance and Statistics from Temple University, Philadelphia, Pa. She also has an A.S. in Mechanical Engineering Technology from the University of Cincinnati. Ms. Sheahan was elected twice as president of the American Council of Railroad Women and was Railroad Woman of the Year in 2001 and 1992.

Mr. Arnold joins MMA from the New Hampshire Northcoast Railroad, where he has served as operations manager since 1990. He previously was assistant chief engineer for the New York, Susquehanna and Western Railway from 1994 to 2000.

Mr. Arnold started railroading in 1976 as a trackman for Conrail, advancing to supervisor of track, supervisor production and production engineer. He joined the NYS&W in 1993 as production engineer. Mr. Arnold holds an associates degree in math and science from State University of New York at Delhi.