Kunming is in the midst of an infrastructure boom that is frenzied even by mainland standards, but construction of a number of projects is on hold following the collapse of a bridge connecting the new airport.
Seven workers were killed and 34 were injured when the unfinished bridge on the expressway collapsed on Sunday afternoon in Yunnan's provincial capital.
A team of safety experts was examining all projects related to the airport and the results of the investigation would be announced next week, Xinhua reported.
Workers complained poor construction practices and tight deadlines were a factor.
The incident once again places Kunming's construction boom in the national spotlight. It comes just a year after the collapse of another bridge, and amid growing complaints from residents exhausted by the incessant sound of progress.
The arrival of party chief Qiu He two years ago heralded the start of the makeover. A new high-speed train line will link the city with Shanghai, while another link will also connect it with Southeast Asian networks and enable a direct service to Singapore.