The stretch connecting the highway to I-80 was built and completed by 1964. Construction on PA 33 was not continued until 1969 when work began on the stretch from PA 512 in Wind Gap to Henry Road in Belfast. This stretch was completed by 1970.
The highway link to I-80 was built and finished by 1964. Construction on PA 33 resumed in 1969, extending from PA 512 in Wind Gap to Henry Road in Belfast. This stretch was completed by 1970.