I-405 Improvement Project Nearly 40 Percent Complete

Traffic comes to a standstill on the northbound and the southbound lanes of the Interstate 405 freeway near Los Angeles International Airport in Los Angeles, Calif., on Nov. 23, 2011. Kevork Djansezian/Getty Images

The $1.9 billion I-405 Improvement Project is almost 40 percent complete, said the program manager at an Orange County Transportation Authority (OCTA) meeting on Sept. 28.

The highway construction project is the largest in California and aims to alleviate growing pressure on the nation’s busiest stretch of highway. The project began in 2018 and is expected to be completed by 2023.