Daniel K. Inouye International Airport sign on the airside of the old control tower. Credit: KeithH / commons.wikimedia.org.

The Mauka Concourse at the Daniel K Inouye International Airport (HNL) in Honolulu, Hawaii has officially opened.

Hawaii Department of Transportation (HDOT) in the US has dedicated the concourse prior to its opening.

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Built with an investment of $270m, the new concourse extension will add 230,000ft² of additional space to the existing 600,000ft² of Terminal 1.

Governor of the State of Hawaii David Y Ige said: “As we continue to face the challenges of the pandemic, we are pleased to open the Mauka Concourse to improve efficiency at HNL.

“The extension of Terminal 1 will provide significant crowd relief during the mid-day peak period and allow our air transportation system to meet the needs of our residents and visitors safely and smoothly.”

Construction works for Mauka Concourse commenced on 1 June 2018, with the project said to have been entirely funded through bond sales and passenger facility charges.

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It is said to be the first major gate expansion since Terminal 1 was dedicated on 20 July 1993 and expected to provide gate relief during the mid-day peak period.

This new concourse features space for six wide-body or 11 narrow-body gates; a new security checkpoint with a provision to add up to six lanes; and eco-friendly design elements such as skylights and windows to make the best use of natural light.

The ventilation shafts at the concourse will direct air conditioning at the human level instead of cooling the whole structure.

Mechanical rooms have been constructed on the ground level to improve the efficiency of the air conditioning system.

HDOT is also said to be on track to receive leadership in energy and environmental design (LEED) certification from the US Green Building Council.

HDOT director Jade Butay said: “The Mauka Concourse is one of the original long-term projects identified in the Hawaii Airport Modernization Program and is the first major expansion since Terminal 1 was built in the 1990s.

“We appreciate the support of our partners as HDOT works on the continual process of improving and maintaining airports statewide.”