The Hawaii Department of Transportation today announced the permanent closure of the left merge lane on eastbound Kalanianaole Highway at the Waa Street intersection, starting at 8 p.m. Tuesday.

DOT said crews will install a new traffic signal system, which involves reconstructing the merge lane into a new pedestrian island refuge, plus realign guardrails, and add new traffic safety devices. Due to these improvements, the merge lane will remain closed.

There will also be a temporary closure of the left turn lane from Waa Street onto eastbound Kalanianaole Highway. Motorists are advised to detour by turning left at Analii Street onto Kalanianaole Highway.

Once work is completed and the traffic signal system is active, motorists will be able to make a direct left turn from Waa Street onto Kalanianaole Highway.

HDOT advises motorists to use caution when traveling through the work zone and to follow all traffic control signs.