The repairman was one of 10 to 15 people on a crew working when he was hit by the equipment around 9:50 p.m. Sunday.
Metro halted service between West Falls Church-VT/UVA and the Vienna stations. Shuttle buses are being used instead.
Authorities have not yet identified the 25-year employee.
In June, a Metro train slammed into another train stopped on the tracks, killing nine and injuring more than 70.
QUICK HEADLINES | MORE US/WORLD | GET NEWS ALERTS
-----------------------------------------------------------------------------------------------
ABC13 SOCIAL NETWORKING
Find us on Facebook® | Follow us on Twitter | More social networking
-----------------------------------------------------------------------------------------------
MORE FROM ABC13
ABC13 widget | Most popular stories |
Street-level weather
ABC13 wireless |
Slideshow archive |
Help solve crimes
-----------------------------------------------------------------------------------------------