If Forward Thrust was approved in 1970 and the proposed system likely built-out by the mid 1990s, what extensions and additional lines would likely have been built over the last 30 years?

Assuming this system was built out over 25 years, that puts it at 1995. Over the last 3 decades, what additional lines and extensions would likely have been built? submitted by /u/ponchoed [link] [comments]