Izikhungo ku Houston vula N Loop W ube nesilinganiso esimaphakathi — 4 (ngokwezilinganiso zomsebenzisi Mapich).
N Loop W, Houston ezitholakele — umsebenzeli wokuqashiswa kwemoto, ibhangi, isitolo sobucwebe, isibhedlela, isitolo se-pawn, ummeli futhi ezinye izikhungo.
Le datha ikhiqizwa kusetshenziswa izihlungi zangokwezifiso ezisuselwe kukho 12 Izinkampani, eyethulwe kuleli khasi.