 I-10 and US 180 diverge east of downtown at exit 23B (Paisano Drive) as US 180 heads off to the northeast (joining US 62 and Paisano Drive northbound) and I-10 to the southeast.I-10's frontage road system is called Desert Boulevard in West El Paso, and Gateway Boulevard in Central and East El Paso.Of these, Gateway East Boulevard is the longest, extending continuously for roughly .