The Monday rush on the Waiʻanae Coast turned into a crawl when a 24-inch water transmission main ruptured along Farrington Highway in Nānākuli, flooding an active excavation site and dropping water pressure for nearby homes. The break, reported near Black Rocks Beach Park, forced lane closures and sent the already tough commute into full-on gridlock as crews scrambled to secure the line and patch up the road.
Where The Break Hit And How The Lanes Shifted
Board of Water Supply crews responded to the failure along Farrington Highway between Piliokahi Avenue and Pohakunui Avenue, where the city shut down both eastbound lanes and one westbound lane in the work zone, according to Hawaii News Now. Traffic managers split the flow at the Laumania Avenue intersection, sending town-bound drivers onto Laumania and Pohakunui avenues before reconnecting them to Farrington Highway. With heavy equipment in the trench and crews working to stabilize the damaged main, drivers were warned to brace for major delays.
Who Lost Water And Where To Fill Up
According to KITV, the ruptured 24-inch transmission line will stay out of service while repairs are underway, leaving about 17 customers closest to the break without running water. KITV reported that a water wagon was staged at 89-574 Farrington Highway so affected residents could fill containers, and that police opened the Sea Country access road until 9:00 a.m. Monday to ease the traffic crunch, with access starting at Kaihoolulu Street off Pakeke Street. The Board of Water Supply urged customers from Honokai Hale to Makaha to conserve water for essentials like drinking, cooking, and hygiene while the big line is offline.
Kolekole Pass Turned Into Emergency Escape Route
To keep the morning commute from completely seizing up, the Hawaiʻi Department of Transportation said it would open Kolekole Pass as a one-direction emergency route for drivers heading out of the Waiʻanae Coast between 5 a.m. and 9 a.m. Monday, in coordination with the U.S. Navy and city officials, per the Hawaiʻi Department of Transportation. Motorists were cautioned that using Kolekole would likely mean slightly heavier traffic on connectors such as Wilikīnā Drive and Kunia Road while that emergency access was active.
Why One Buried Pipe Can Stall The Whole Leeward Coast
The 24-inch transmission main functions as a primary artery for the Leeward Coast, and previous reporting on similar breaks has noted such mains can carry roughly 60 percent of the area's water demand, helping explain why even short outages trigger conservation orders and water wagons, according to the Star-Advertiser. Past breaks along Farrington have required several days of repairs and follow-up roadwork, underscoring how a single damaged line can disrupt both water service and the coast's only major arterial. Once the current fix is in place, the main is expected to undergo testing and disinfection before it is brought back into the system.
Crews remained on scene into the evening, and residents can call the Board of Water Supply trouble line at 808-748-5000 or track official updates for word on when lanes and water service will fully return, per KITV. Updates from BWS and city officials are expected to clarify the repair timeline and lane reopening schedule.
