> one reason there were major delays was because maps of underground sewer lines and plumbing were inaccurate, and needed to be relocated.
New York calls this "peek and shriek" [1]. No one really knows whats under the street until you start digging.
The Van Ness Bus line was particularly bad because it failed to adjust expectations and project management once this was discovered. In NY at least everyone expects it to happen, infrastructure there dates back hundreds of years.
It was also pretty predictable as literally ever major SF dog runs into similar problems or wacky underground issues (giant building sized slab of rock that no-one found? Happened. Run into multiple historic 150 year old sunken boats buried under your skyscraper? Happened…)
New York calls this "peek and shriek" [1]. No one really knows whats under the street until you start digging.
The Van Ness Bus line was particularly bad because it failed to adjust expectations and project management once this was discovered. In NY at least everyone expects it to happen, infrastructure there dates back hundreds of years.
[1] https://www.nytimes.com/interactive/2016/08/18/nyregion/new-...