A Sylmar construction firm was named among the defendants in a lawsuit over alleged shoddy work done on a runway repair project at Los Angeles International Airport.

The joint venture between Tutor-Saliba Corp., in Sylmar, and O&G Industries Inc., in Torrington, Conn., was among the four defendants named in the lawsuit filed last week by the city in Los Angeles Superior Court, according to a story in the Los Angeles Times.

Tutor-Saliba is a subsidiary of Tutor Perini Corp., also based in the northeast San Fernando Valley community.

City officials told the Times the runway had many construction defects, including cracks, exposed steel reinforcing bars and deteriorating concrete since being rebuilt in 2007 at a cost of $250 million.

In the lawsuit, the city attorney’s office alleged the runway “is unfit for its intended purpose and the city will incur ongoing consequential property damage and economic losses as a result of the deficiencies,” according to the Times.

Shares of Tutor-Perini gained 57 cents, or about 2.5 percent, to close at $23.68 on the Nasdaq.