The Hawaii Department of Transportation announced on April 23 that the westbound H-1 Airport Viaduct will be fully closed between the Airport off-ramp (Exit 16) and the Kāneʻohe/Honolulu off-ramp (Exit 13B) on Wednesday, April 29 from 9 p.m. to 4 a.m. the following day. The closure is required for continued destination sign installations, which were postponed earlier due to severe weather and equipment issues.
This work is part of Phase 3A of a larger project aimed at upgrading roadway signage in the area. During the closure, motorists will be detoured via Nimitz Highway. The department said that installation of new signs near Pearl Harbor Nimitz Gate as part of Phase 3B will not require full road closures, with completion expected by Fall 2026.
HDOT reminds drivers to exercise caution and follow all posted traffic control signs and barriers during this period. Special duty police officers will be present to assist with safety procedures. “Please note all work is weather permitting. The final completion date of this project is subject to change per these conditions,” HDOT said in its announcement.
The Hawaii Department of Transportation manages facilities including multiple airports for domestic and international carriers, commercial harbors, and a statewide highway system according to the official website. The agency functions as part of the executive branch of state government according to the official website, operating infrastructure across all six major Hawaiian islands according to the official website.
The department operates eleven commercial service airports, four general aviation airports, nine commercial harbors, and maintains approximately 2,450 lane miles of highways throughout Hawaii’s main islands according to the official website. HDOT collaborates with federal agencies such as the Federal Aviation Administration, U.S. Coast Guard, Federal Highway Administration, as well as county planning departments according to the official website.
According to its mission statement on its official website, HDOT aims “to deliver a safe, efficient, accessible and sustainable transportation system that supports mobility for people and goods while fostering economic growth and quality of life.” Motorists are encouraged to check weekly roadwork updates or sign up for lane closure notifications through HDOT’s online platforms.
