A portion of Kanapuu Drive near the Kahako Street intersection remains closed, as well as adjacent sidewalks, as crews inspect a large sinkhole, on the shoulder of the road near a metal barrier. Engineers were not able to get too close to the collapsed pipe area down the inlet side of the sinkhole due to safety reasons, which measures 12 feet in diameter. City crews examined a large sinkhole today after it appeared on Kanapuu Drive in Kailua Bluffs following Tuesday’s heavy rains. A portion of Kanapuu Drive near the Kahako Street intersection remains closed, as well as adjacent sidewalks, as crews inspect the sinkhole, on the shoulder of the road near a metal barrier. The sinkhole, which measures at least 15 feet across, also took out part of the sidewalk. “What we discovered is a sinkhole, quite deep, anywhere from 12 to 15 feet deep,” said Robert Kroning, director of the city’s Department of Design and Construction. “We sent some engineers down the inlet side. They walked in and learned that there has been a collapse in that drain pipe — it’s a drain pipe that we’re talking about, corrugated, metal pipe, 12-foot diameter.” Kroning said the city does not know how the collapse h...