I-575 at Chastain Road . The wide median is typical of I-575 in the study area providing a possibility to minimize right-of-way requirements for the addition of the new HOV system in the median. A new HOV connection is planned just south of this point at the Big Shanty Road underpass. Note the two span arrangement of the Chastain Road Bridge over I-575. This could allow the addition of outside lanes, if required to accommodate the HOV system without additional right-of-way. This bridge design is typical of the I-575 corridor within the study limits.