CR 4 begins at Merrick Road (CR 27) in Merrick. The southernmost section is called Merrick Avenue.

Photos taken January 2009.

Merrick Avenue intersects Sunrise Highway (NY 27) at a traffic light.

Photo taken January 2009.

Merrick Avenue runs north through Merrick as a two-lane undivided road.

Photos taken January 2009.

The road widens to four lanes. There is an interchange with the Southern Parkway.

Photo taken January 2009.

Merrick Avenue intersects Jerusalem Avenue (CR 105) at a traffic light.

Photo taken January 2009.

Merrick Avenue runs north to East Meadow as a four-lane undivided road.

Photos taken January 2009.

Merrick Avenue intersects Front Street (NY 102) at a traffic light. There is no signage giving the route number.

Photo taken January 2009.

Merrick Avenue continues to the north as a four-lane undivided road.

Photos taken January 2009.

Merrick Avenue intersects Hempstead Turnpike (NY 24) at a traffic light. Turn left for an entrance to the Meadowbrook Parkway.

Photo taken January 2009.

Merrick Avenue runs north along the western boundary of Eisenhower Park. There is a parallel bike path along the right side of the road.

Photos taken February 2020.

Charles Lindbergh Boulevard, which leads to the Nassau Coliseum, Nassau Community College, and Museum Row, begins on the left here.

Photos taken February 2020.

Stewart Avenue (CR 177) begins on the left at a traffic light. The entrance to Eisenhower Park is to the right.

Photos taken February 2020.

Merrick Avenue continues north along the western boundary of Eisenhower Park.

Photos taken February 2020.

Merrick Avenue ends at a traffic light at Old Country Road (CR 25). Turn right to go east or left to go west. Continue straight ahead onto Post Avenue to stay on CR 4.

Photos taken February 2020.

Post Avenue is a two-lane undivided road.

Photos taken October 2025.

Post Avenue passes under the Main Line of the Long Island Rail Road.

Photo taken October 2025.

Immediately after the bridge, Union Avenue (CR 63) begins on the right. Use the left lane to stay on Post Avenue.

Photo taken October 2025.

Post Avenue runs north through Westbury.

Photos taken October 2025.

There is an interchange with the Northern Parkway.

Photos taken October 2025.

There is a traffic light at Jericho Turnpike (NY 25). Turn right to go east or left to go west. At this point, Post Avenue changes names to become Post Road.

Photos taken October 2025.

Welcome to the Village of Old Westbury! Post Road runs north as a two-lane undivided road.

Photos taken October 2025.

The northbound and southbound lanes split to form a circle. There is a pond in the middle of the circle.

Photos taken 2023-2025.

Immediately north of the circle, there is a pair of traffic lights at the service roads of the Long Island Expressway (I-495). There are no entrances or exits anywhere near here.

Photos taken October 2025.

Post Road continues north. CR 4 ends at a rather confusing intersection. The road straight ahead, an unnumbered county road, is called Wheatley Road. The road to the left, a town road that runs back south to the service roads of the Long Island Expressway (I-495), is also called Wheatley Road. As if this wasn't sufficiently confusing, a small green sign says that the road straight ahead is called Wheatley Post Road, which is not correct.

Photos taken October 2025.