Most of Hawaii’s roads are vulnerable to climate hazards

Boulders from a landslide block part of the Hilo-bound lane of Highway 19 in the Kaawalii Gulch in 2015 on the Hamakua Coast. The Hawaii Highways Climate Adaptation Action Plan listed landslides and rockfalls as a threat to Mamalahoa Highway on the Hamakua Coast. (HOLLYN JOHNSON/Hawaii Tribune-Herald file photo)

Lava flows over Highway 132 in May 2018 during a media tour in lower Puna led by the Hawaii National Guard. (HOLLYN JOHNSON/Hawaii Tribune-Herald file photo)

HONOLULU — Nearly 60% of Hawaii’s roads and over 75% of its bridges are threatened by possible landslides, coastal erosion, sea level rise, storm surges, tsunamis, wildfires or other natural hazards, according to a state Department of Transportation report that identifies vulnerable areas along state highways and recommends actions to make them more resilient to climate-related effects.