![(Union Pacific Photograph)](https://www.railwayage.com/wp-content/uploads/2024/07/UPaarlead-315x168.png)
50 Years of Service: BART Could Have Been an Elevated Monorail, and Other Fascinating Facts From the Parsons Brinckerhoff Report
Written by Bay Area Rapid Transit Communications Department![image description](https://www.railwayage.com/wp-content/uploads/2022/05/MicrosoftTeams-image-7.png.jpeg)
A rendering of a “basic supported system” train from the Parsons Brinckerhoff report of 1956.