Complex sentence: Its western terminus is at an intersection with SH 105 in Conroe and travels south-east, ending at US 59, now cosigned as I-69, in Porter.
Split into simpler sentences: Its western terminus is at an intersection with Texas State Highway 105 (SH 105) in Conroe. It then travels southeast, ending at U.S. Route 59 (US 59), now cosigned as Interstate 69 (I-69), in Porter.