Path. The path is named in memory of Alexander Zuckermann, the founder of the East Bay Bicycle Coalition and an advocate of the Bay Bridge Trail. The new pedestrian and bicycle route connects the East Bay to Yerba Buena Island. Currently, MUNI is the only public transportation that transports bicycles and pedestrians from Yerba Buena Island and Treasure Island to San Francisco. The complementary pathway across the western span to San Francisco is on track for completion in 2025. Construction incidents Weld controversy On April 6, 2005, the FBI announced an investigation into allegations by 15 former welders and inspectors on the new span that welders were rushed to an extent affecting their performance on up to one-third of the welds, and that workers were ordered to cover up the defective welds by re-welding in a superficial manner. Many of these welds were then embedded in concrete, some deep underwater. A California Department of Transportation (Caltrans) spokesperson quickly responded with a public assertion that it was not possible that defective welds could be hidden from Caltrans inspectors. This was subsequently tested by radiological, ultrasonic and microscopic inspection of some of the welds that were accessible and alleged to be deficient. On April 21, 2005, news reports indicated that the Federal Highway Administration hired private inspectors to remove 300-pound (136 kg) sections for detailed laboratory analysis. On May 4, 2005, the Federal Highway Administration said the tests by three independent contractors showed that welds pulled from three steel chunks of the bridge "either met or exceeded required specifications." Since some of the material removed for inspection was specifically identified by the welders' complaints as worthy of inspection, this finding was received as good news. Potential foundation problems In early November 2011, The Sacramento Bee newspaper reported and analyzed various reports (including "whistle-blower" statements) concerning the potential for falsified inspection reports associated with deep pile foundations, including some supporting the SAS main tower. That article, and a later Sacramento Bee article published on May 26, 2012, provided details about construction and testing concerns and quoted experts in relevant engineering fields who raised questions about the adequacy of Caltrans's testing and oversight, and construction and testing practices of the bridge builder. On June 12, 2012, shortly after publicly supporting further study of the concerns raised in the May Bee article, Caltrans issued a press release with an attached letter to the Bee's Executive