FROM TODAY'S HOUSTON CHRONICLE April 22, 2004, 11:55PM Metro agrees to contract for next 4 light rail lines By LUCAS WALL Metro has taken a significant step toward the construction of Houston's next four light rail lines. Directors on Thursday authorized signing a five-year contract estimated at $60 million with STV Inc. of New York, the same consortium that shepherded development of the Main Street line, which opened Jan. 1. ... Six firms competed for the project, which includes options for two two-year extensions. Dennis Hough, the Metropolitan Transit Authority's director of contracts, said STV and its 16 subcontractors stood...