Major LA Freeway Expansion Project Begins: I-405 Improvements Expected to Reduce Congestion

Caltrans officially broke ground on a major I-405 expansion project on February 5, 2026, aimed at improving traffic flow and reducing congestion on one of Southern California's busiest freeways. The $3 billion project is expected to ease commutes for residents and visitors accessing LAX.

Project Scope

• Location: I-405 from LAX to West Hollywood (15-mile corridor)
• Duration: Construction ongoing through 2028
• Cost: $3 billion in state and federal funding
• New Infrastructure: Two additional lanes plus smart traffic management
• Technology: Advanced traffic monitoring and incident response systems

Benefits for Travelers

• Reduced commute times between LAX and Hollywood
• Improved traffic flow during peak travel periods
• Enhanced safety features and emergency response
• Better connections to parallel surface streets
• Increased reliability for airport ground transportation

Construction Impact & Mitigation

Caltrans is implementing a phased construction plan to minimize disruption. Night-time lane closures and temporary rerouting will be managed with advance notice. Transit alternatives and improved surface street signage will help travelers navigate construction areas.

Timeline

• Phase 1 (2026): LAX to Getty Center Drive
• Phase 2 (2027): Getty Center to Sunset Boulevard
• Phase 3 (2028): Sunset Boulevard to West Hollywood completion

Travel Tips: Allow extra time for commutes through the construction zone. Use real-time traffic apps and consider using the Metro K Line as an alternative to the I-405.