A massive fire believed to have started i n a homeless encampment beneath the 110 Freeway has turned into a commuter nightmare in Los Angeles, with northbound lanes expected to remain shut indefinitely over fears the blaze may have damaged the roadway’s structure. The fire erupted Monday night beneath an overpass in Wilmington, near the Port of Los Angeles, forcing authorities to shut down the busy roadway in both directions, according to the Los Angeles Fire Department. The southbound lanes finally reopened on Tuesday morning, while the northbound lanes from Harry Bridges Boulevard to Channel Street are expected to remain closed indefinitely. KTLA A California Department of Transportation spokesperson said that crews were still trying to assess the damage to the structure on the northbound side.…