1859 Chicago gas pipe finally out of service

Infrastructure in American cities can go back a ways. See this recent case in Chicago involving a gas pipe:

A small crowd gathered as a flatbed truck carefully backed into position next to a cavernous hole in the ground that revealed the retiree: a 17-foot-long piece of cast-iron pipe, believed to be the oldest natural gas pipe in the city of Chicago.

The pipe was in operation from 1859 until just last week, when the last customer relying on it officially switched over to a modernized polyethylene natural gas main, said Andy Hesselbach, Peoples Gas vice president of construction.

When the retiree began its work, the streets were paved with dirt and frequented by horse-drawn carriages. The Great Fire of Chicago wouldn’t occur for 12 years…

Replacements are prioritized based on risk, he said. In the last 30 years, the pipe excavated on Friday experienced 30 leaks, making it a prime candidate. Not every pipe that is retired is excavated, he said. Some are left in place while a new main is installed nearby.

Building good infrastructure to support all sorts of positive social and economic activity requires regular attention and maintenance. The cost to replace infrastructure can often seem prohibitive but upgrades are needed for systems that can be improved upon and/or consistently need repairs. Of course, it would be best to build for the long-haul at an efficient price from the beginning but this is not always possible as technology and places change.

The dangers of tens of thousands of miles of aging metal gas lines

Big infrastructure failures attract attention but USA Today finds that millions of Americans live near aging gas lines:

About every other day over the past decade, a gas leak in the United States has destroyed property, hurt someone or killed someone, a USA TODAY Network investigation finds. The most destructive blasts have killed at least 135 people, injured 600 and caused $2 billion in damages since 2004…

A review of federal data shows there are tens of thousands of miles of cast-iron and bare-steel gas mains lurking beneath American cities and towns — despite these pipes being a longtime target of National Transportation Safety Board accident investigators, government regulators and safety advocates.

The Pipeline and Hazardous Materials Safety Administration has been pushing gas utilities for more than a decade to replace aging pipes with more resilient materials like plastic, though it’s not required by law. The industry has responded by replacing thousands of miles of pipe, but a daunting amount remains. It can cost $1 million per mile, or more, to replace aging pipe, costs typically passed to customers…

Aging pipes are a high-risk example of the nation’s struggle to replace its crumbling infrastructure, a danger hidden beneath the ground until a pipe fails or is struck by something and a spark ignites a monstrous blast. Natural gas is piped into 67 million homes and at least 5 million businesses, schools and other buildings across the country, with gas distribution and service lines snaking beneath most neighborhoods in American cities.

A long and fascinating look at how gas is delivered to many homes and places underground.

Perhaps the relative lack of outcry regarding this issue is because the events take place at seemingly random times in different places. In other words, a large-scale explosion might draw more attention than the scattered events that do take place. The costs of fixing this are quite high yet given the typical levels of concern about safety, it seems like this will need to happen at some point.