http://www.austintexas.gov/edims/document.cfm?id=155194
posted here:
http://buildingatx.com/2014/03/gable...aps-up-photos/
with the following message: "Bowie Street Underpass coming soon, construction anticipated later this year; a recent site plan shows an additional stairway north of rail line to 3rd and Seaholm Drive intersection"
Also, commuter rail and street car platform?