The legal, political and economic effects of two South Carolina utilities’ decision to abandon construction of the V.C. Summer nuclear expansion project have barely begun.

In October 2015, the Aliso Canyon gas fields in Southern California sprang a leak that took the state’s largest gas-storage system out of service.

A $429-million highway job in Ohio to bypass the southern city of Portsmouth and speed driving time between Cincinnati and Columbus by late 2018 is the state’s largest road project and its first as a public-private partnership.

Crews hit a milestone in the $1.7-billion Regional Connector project, which entails burrowing through an underground jungle of infrastructure.

The airport has been negotiating the terminal renovation contract with Madrid-based Ferrovial Airports, leader of the public-private partnership, for more than 10 months.

A bankrupt Texas toll road has new financing and new management.