The road becomes a full freeway just east of the intersection, and maintains this status as it heads eastward through Summerlin and Las Vegas.

Later projects funded by the Regional Transportation Commission of Southern Nevada brought freeway interchanges to Buffalo Drive in 1992 and Rampart Boulevard in 1994.

[3] Also in 2005, the Nevada Department of Transportation (NDOT) had reconstructed the US 95/Rainbow Boulevard interchange as part of its US 95 widening project (including a new direct connection from eastbound Summerlin Parkway to US 95 north which was not constructed in 1989).

The $2 million project was designed to reduce impacts from drivers losing control of vehicles into the landscaped median and prevent crossover collisions.

[5] By January 2019, maintenance responsibility for Summerlin Parkway had been transferred from the City of Las Vegas to the Nevada Department of Transportation; NDOT designated the freeway as State Route 613.