As new lines get tougher to permit and build, taking care of aging infrastructure will become incredibly important.

As pipeline construction becomes more and more difficult (think Keystone XL, Dakota Access, etc.) - the pipes that are already in the ground become more and more important. Many pipelines are already beyond their originally intended service life, and as energy demand grows, not only are new assets becoming more difficult to construct, the older assets are being pushed to higher throughput capacities. As Richard Kinder elaborates, it's an issue that will shape America's energy future, and it is likely to put the spotlight on caring for the existing pipe.

http://www.fool.com/investing/2016/10/25/3-things-kinder-morgan-incs-founder-wants-you-to-k.aspx?source=isesitlnk0000008