 SH 118 leaves the overlay going northward at North Fifth Street.On the city's north side, SH 118 leaves the street grid and intersects State Highway 223, a short highway passing around Alpine's northeastern quadrant to US 67 and US 90 at Sul Ross State University.SH 118 then crosses the South Orient Rail Line and passes by Alpine Casparis Municipal Airport before leaving town following a straight stretch to the county line.