Hi Tom -
Located a photo shot in 1991 on Front St & John Maher very close to Pier 17 in SF. The street had duel gauge track in it with with cobble stones for a short section still. In the mid 1990s it seems like someone was doing a good job at ripping up the unused track as most of the rails north of the Caltrain station were removed. A few chucks of State Belt remain: In front of the roundhouse, by the sewer plant lead, across the darw bridge by SBC Park etc.... Not sure how to upload the photo, will email it to you, you can post if you like. - Best Regards;
john