Transbay Terminal

The only possible remaining (limited by castastophically incompetent past decision-making by the TJPA and SF government), operable (based on first world standards and practices), constructible (based on lack of criminally-permitted conflicting real estate sell-offs) rail alignment into the Transbay Terminal is this. (640kb PDF.)

70kmh design speed; DB/OeBB-standard turnout geometry; minimum 250m radius on running lines (300m no longer feasible due to real estate scams); 190m radius absolute minimum; gap-free 1000m minimum radius platform curvature; over-generous 4.5m track spacing; maximally conflict-free interlockings enable maximum possible throughput; maximally free passenger flow to minimize journey times (not shown in track sketch, but obvious); etc.

In other words, about what your average non-English-as-a-first-language (ie potentially competent) railway engineer with basic skills (ie certainly not American) would toss off in his or her sleep.

Yes, explanatory text and a nice narrative should be added sometime.
Much more detail available on request ... though why bother?

Historial Transbay Terminal rail alignment development

Bay Bridge





Richard Mlynarik
Last modified: Thu Jul 31 18:32:18 PDT 2008