LOS ANGELES (CBSLA.com) — The city of Los Angeles has filed a lawsuit against four major contracting firms tapped to build a $250 million south runway at Los Angeles International Airport (LAX), according to a report Thursday.

The complaint filed in Los Angeles County Superior Court on Oct. 10 alleges substandard construction and concrete flaws are causing the 13,000-foot runway to wear out prematurely, the Los Angeles Times reported.

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According to the Times, court documents show the runway is in such disrepair that renovation plans will likely be moved up ahead of schedule.

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The runway opened in April 2007 as part of a $338 million safety improvement effort at LAX, which in 2011 was ranked third among airports with the highest number of runway incidents.

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Click here (PDF) to read the complaint.