Anchorage will get another dose of airplane noise this summer, as its main airport’s north-south runway closes for six months starting April 1 due to construction.

The runway, one of three at Ted Stevens Anchorage International Airport, is undergoing its second year of work from April through October in a repaving and widening project. Its closure last year sent more takeoffs east over the city, leaving Anchorage Hillside residents reporting lost sleep before construction ended for the winter in October.

According to Department of Transportation and Public Facilities data posted on the project’s website, along with projections of its effects on noise, that pattern will repeat during this year’s six-month closure of the north-south runway.

“Most arrivals will land from the west, and most departures will take off to the east, creating a temporary increase in air traffic and noise over the city,” DOTPF officials wrote. “Airport operations and noise levels will return to normal upon completion of the project in October 2019. Every effort is being made to reduce noise and impacts to local residents.”

A list of frequently asked questions for the project describes the work as “critical infrastructure” for the world’s fifth-busiest cargo airport.

“The runway pavement was last updated in 2004, and inspections indicate that it needs to be replaced. In order to meet FAA standards, the runway must be widened to accommodate large aircraft already serving the airport and the geometry of the intersecting taxiways must be revised to meet current FAA requirements.”

The airport, along with the adjacent Lake Hood Seaplane Base, is expected to see about 303,000 takeoffs and landings according to an environmental assessment of the project.

Residents can submit comments on the runway project through the airport’s website.

Correction: An earlier version of this article stated that the work was slated to begin Monday, March 25. It will begin Monday, April 1.

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