The 5 Freeway was temporarily closed in both directions near state Route 126, but the freeway - a main artery for the state of California - was reopened by mid-afternoon.
Hundreds of firefighters, including air units, worked to control the fire amid gusting Santa Ana winds.
The fire was at 1,000 acres about 1:15 p.m.
One structure was reportedly destroyed in the Rye Fire by 5 p.m., though it remains unknown if the structure was a home, according to Sheriff's officials.
"The fire has burned 7,000 acres along Highway 126 and Interstate 5", said Pono Barnes, L.A. County Fire Department public information officer.
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Gusty winds kept firefighting aircraft grounded and may have also been the cause of a power outage that interrupted service to about 2,090 customers in the Santa Clarita area. Westridge High School, Rancho Pico Middle School and Oak Hills Elementary School were evacuated as well. Calls are being rerouted.
According to the sheriff's department, evacuations were ordered late this morning along Rye Canyon Loop and Kelly Johnson Parkway. Authorities also evacuated the Valencia Travel Village RV park in the 27900 block of Henry Mayo Drive in Castaic. An evacuation center has been established in the multipurpose room at Valencia High School (27801 Dickason Drive).
Map showing heat detected by a satellite on the Creek and Rye Fires in the Los Angeles Area.
Wildfires in the eastern San Fernando Valley and Santa Clarita Valley have charred thousand of acres and closed major freeways.
Los Angeles County Fire Capt. Scott Miller told KTLA that resources are a bit stretched for the Rye Fire, but officials were expecting more to come in.