Construction on the third and final phase of runway reconstruction at the Duluth International Airport began Monday.

Once the work on the main runway and several sections of adjacent taxiway is complete in August, it will mark the end of a yearslong effort to reconstruct the 60-year-old 10,200-foot runway. Upgrades include new concrete pavement, electrical circuitry and lighting.

When complete, the reconstructed runway “will be poised to support aviation in this region for the next generation,” the Duluth Airport Authority said in a news release Monday.

Construction started on the aging runway in 2016 and resumed again in 2017, but was delayed in 2018 due to the needs of AAR Corp., which services airliners at the airport.

In August 2018, the U.S. Department of Transportation awarded the Duluth International Airport a grant of more than $8.6 million for infrastructure improvements.

The Airport Authority said construction will cause traffic changes near the airport entrance at Haines Road.

By late June, the runway will shorten to 7,000 feet as construction is concentrated on the runway.  The airport’s other runway will remain open during the reconstruction of its main runway.

“During the construction, we do not anticipate travel impacts unless we experience days of inclement weather or low visibility,” the Airport Authority said.