Honolulu police have reopened Makiki Street between Round Top Drive and Makiki Heights Drive just after 9 p.m. Monday.
It was closed earlier in the day because of a downed tree that also affected power lines.
Hawaiian Electric and Hawaiian Telcom repair crews were sent out.
About 40 customers had power knocked out, and it was all restored by 2:45 p.m.
There were no injuries reported.