(KHNL) Farrington Highway is closed in both directions between Upena Street and Kili Drive in Makaha.
Three fire companies responded to a fire underneath the bridge near Kili Drive at about 4:40 a.m.
Police say the fire severely damaged the bridge and that it will not support the weight of any traffic.
Fire Capt. Kenison Tejada says flames from the fire may have caused power and utility lines near the bridge to fall.
Hawaiian Electric Crews are fixing the problem.
Board of water supply crews are also in the area fixing a water main break.
BOW crews shut off water to customers to fix the broken water main.
A "roving water wagon" for residents is available.