In the early 1950s, the old causeway was replaced by a new bridge to be shared by the old highway and the new parkway. Parts of the old road across the swamp are still visible during low tide. In the meantime, US 9 joins the Garden State Parkway for two miles.
The other stretch where the Parkway bypassed NJ 4, through Toms River, is NJ 166.
| Mile | Street Name | Feature | ||
Road continues northward as  New York Rd |
||||
| 2.76 | Northern terminus of , Bass River Twp, Burlington Co |
|||
| 2.76 | New York Rd | New York Rd |
|
|
| 2.61 | Southern terminus of , Bass River Twp, Burlington Co |
|||
| 0.62 | Northern terminus of , Port Republic City, Atlantic Co |
|||
| 0.36 | New York Rd | Stream | culvert | Stream |
| 0.00 | New York Rd | |
New York Rd |
|
| 0.00 | Southern terminus of , Port Republic City, Atlantic Co |
|||
| Road continues southward as New York Rd |
||||