The road heads northeast through farmland and desert along with some development on two-lane undivided Robertson Boulevard, entering the city of Chowchilla.

In Chowchilla, SR 233 widens to four lanes and passes through residential and commercial areas of the town.

The route becomes a divided highway and crosses a Union Pacific railroad line before coming to its eastern terminus at an interchange with SR 99 just northeast of town.

The road continues east as Avenue 26 towards Hensley Lake past the interchange.

[4] Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage.