texas99State Hhway 99, also known as the Grand Parkway, is a Texas hhway, which opened its first section in 1994.When State Hhway 99 is complete, it will be the longest beltway in theWhile TxDOT says the expansion goes mainly through rural portions of the region, SH-99 would be near more than 100 established nehborhoods, especially in the Alvin