I-5 south at Exit 736 - CA-89/Lassen National Park/McCloud. This is the northern end of CA-89, which runs generally along the east side of the Sierra Nevada.
End US-97 South at I-5 south onramp (Exit 747). Turn left for I-5 south to Redding. Turn left for the College of the Siskiyous.
US-97 South at Weed Blvd.
US-97 south at Weed Blvd. Use Weed Blvd. north (BL-5/CA-265) for I-5 to Yreka. Use Weed Blvd. south (BL-5/US-97) to continue on US-97 and for I-5 south to Redding.