The station is situated where two lines cross at different levels: the line from Birmingham Snow Hill to Stourbridge Junction crosses over the Stour valley line by means of a bridge. There are four platforms, two on each line. London Midland manage the station and operate almost all of its services, with limited services also operated by Chiltern Railways.
The present station opened in 1995 when the line from Birmingham Snow Hill reopened, replacing the nearby Smethwick West station. In 2005/6, 481,000 people changed trains at Smethwick Galton Bridge, 4.7 times the amount that began or ended journeys at the station, making it the busiest station in Smethwick. Without interchanges it is normally slightly less busy than the more centrally located Smethwick Rolfe Street, though that was not the case in the 2006/07 statistics.
The high level platforms are served by London Midland Class 150 trains to Birmingham Snow Hill and Moor Street every 10 minutes off-peak, with a journey time of 10 minutes to Snow Hill. Trains commence from Great Malvern, Worcester Foregate Street or Kidderminster and continue to Dorridge or Shirley. One train per hour operates to Stratford-upon-Avon. Additionally, 6 Chiltern Railways services from Kidderminster to London Marylebone (and 5 return) stop here in the morning and evening peaks.
There are four other services that call here throughout the day: