The road maintains no more than a gentle slope for its entire length, making it more easily navigable by 19th-century conveyances. For a straight-line bypass of a curve in East Rutherford and Carlstadt, see CR 14A.
In the 1920s, this road was part of NJ 3. In the 1930s, NJ 3 was signed but not state-commissioned along the current CR 14A through Carlstadt (by then, autos could deal with the steep slope that Paterson Plank Road avoided). When the state completed NJ S-3 (now NJ 3), the state ceded jurisdiction back to Bergen County. The road, originally designated as CR 120, does become NJ 120 when it crosses NJ 17, but I don’t know when CR 120 first got its number; the duplicate number may be merely coincidental.
CR 120 is posted as, and is now officially designated as, primary route 14.
| Mile | Street Name | Feature (West to East) |
| 0.00 |  BEGINS, Wallington Boro |
|
| 0.00 | Main Ave | Passaic River {bridge} |
| 0.03 | turns right onto Paterson Ave |
|
 The Acquackanonk Bridge, as seen from Paterson Avenue. | ||
| 0.11 | Entering (Wallington Boro) [East Rutherford Boro] | |
| 0.13 | Paterson Ave | [Carlton Ave  ] |
| 0.49 | Paterson Ave | (Locust Ave) [Locust Ln]  {signal} |
 Westbound on Paterson Avenue approaching Locust Avenue. | ||
| 0.90 | Paterson Ave | (Mount Pleasant Ave) {signal} |
| 1.28 | Paterson Ave | Erie Railroad {at-grade crossing} |
| 1.28 | Entering (Carlstadt Boro) [East Rutherford Boro] | |
| 1.38 | Paterson Ave | (Hoboken Rd  / Garden St) |
| 1.38 | Entering East Rutherford Boro | |
| 1.74 | Paterson Ave | Uhland St {signal} |
| 1.90 | Paterson Ave | Boiling Springs Ave {signal} |
| 2.06 | Paterson Ave | Hackensack St  {signal} |
 Eastbound on Paterson Avenue just past Hackensack Street. | ||
| 2.41 | Paterson Ave |  {overpass} |
| 2.41 | ENDS, East Rutherford Boro |
|
. NJ 120 is inventoried south to north; the end of CR 14 and the end of NJ 120 are the same point.