Southside Airfield Improvement Program, LAX

The SAIP at LAX consisted of three primary tasks on the south runway complex: the demolition, relocation and reconstruction of the southernmost runway, 25L / 7R, and the creation of a new center taxiway between the new runway and the existing second runway. During the first phase of construction, the original Runway 25L / 7R was closed and removed. A new runway was constructed 55 feet to the south of the former runway’s location. The new runway duplicates the old runway’s 11,095 foot length and 200 foot width. Phase two consisted of a new center taxiway between the two runways on the south airfield. The new taxiway allows aircraft landing on 25L / 7R to taxi and hold position out of the path of aircraft utilizing the inner runway – 25R / 7L – until federal air traffic controllers authorize pilots to cross the inner runway and continue to their assigned gates at the terminals. Construction also included the relocation and replacement of all navigational and visual aids, as well as utilities, lighting, signage, grading and drainage. The southernmost Runway 25L / 7R re-opened on April 2, 2007. During the closure of that runway, LAX maintained normal flight schedules with minimal delays using the two northern runways and remaining southern runway. During the taxiway construction phase of the project, airport officials worked with FAA officials, air traffic controllers and the airlines to ensure that air traffic and ground operations continued normally.

CALTROP worked closely with Los Angeles World Airports (LAWA) to provide construction management and construction inspection services.

LOCATION: Los Angeles, CA
CLIENT: Los Angeles World Airports
PROJECT VALUE: $334 million


  • New Runway and Taxiway Construction


  • Construction Inspection
  • Office Engineering
  • Construction Administration
  • Mill / Shop Fabrication Inspection
  • Materials Testing
  • Materials QA