For a time, there was a bridge crossing the Hackensack River and connecting the two sections of road (the bridge that replaced a little ferry and gave Little Ferry its name). However, it was washed out many years ago and never replaced because the bridge that carries US 46 over the river is very close by.
CR 124 was also part of the old (pre-1928) NJ 10 which carried traffic from Paterson to Edgewater. Other Bergen County stretches of this road include CR 56 between the Passaic River and the courthouse in Hackensack; a half-mile of US 1/9 in Ridgefield; and all of NJ 5.
From US 1/9 to Teaneck Road, the highway is also signed as part of primary route 17.
| Mile | Street Name | Feature (South to North) |
| 0.00 | CR 124 BEGINS, Ridgefield Boro | |
| 0.00 | Hendricks Causeway | Broad Ave, US 1/9 {signalized circle} |
| 0.07 | Hendricks Causeway | Northern Railroad {overpass} |
| 0.57 | Hendricks Causeway becomes Bergen Tpk at Edgewater Ave | |
| 0.70 | Bergen Tpk | Overpeck Creek {bridge} |
| 0.70 | Entering Ridgefield Park Village | |
| 0.90 | Bergen Tpk | New Jersey Turnpike, I-95 {overpass} |
 Joint signing of CR 124 and primary route 17 southbound just past Teaneck Road. | ||
| 1.18 | Bergen Tpk | [Teaneck Rd, CR 39] {signal} |
| 1.59 | Bergen Tpk | Ridgefield Ave, CR S-124 |
| 1.59 | CR 124 ENDS, Ridgefield Park Village | |
| Gap in road due to washed-out Hackensack River bridge | ||
| 0.00 | CR 124 BEGINS, Little Ferry Boro | |
| 0.00 | Bergen Tpk | (Washington Ave | Main St, CR 40) {signal} |
| 0.23 | Bergen Tpk | Sylvan Ave, US 46 {signalized circle} |
| 0.37 | Bergen Tpk | (Lakeview Ave) [shopping center] {signal} |
| 0.49 | Bergen Tpk | [River St, CR 49] {flashing signal} |
| 0.69 | Entering Hackensack City | |
| 0.96 | Hudson St | Moonachie Rd, CR 503 {signal} |
| 1.24 | Hudson St | Vreeland Ave {signal} |
| 1.27 | Hudson St | Bergen-Passaic Expwy, I-80 {underpass} |
| 1.38 | Hudson St | Kennedy St {signal} |
| 1.65 | Hudson St | Lafayette St {signal} |
| 1.76 | Hudson St | (Jackson Ave) {signal} |
| 1.79 | Hudson St | Broadway {signal} |
| 1.92 | Hudson St | Kansas St, [CR C-4] {signal} |
| 2.11 | Hudson St | (Essex St) [Main St], CR 56 {signal} |
| 2.11 | CR 124 ENDS, Hackensack City | |
Part of the road was proposed to be included in primary route 17, but it was never included.
| Mile | Street Name | Feature (West to East) |
| 0.00 | CR S-124 BEGINS, Ridgefield Park Village | |
| 0.00 | Ridgefield Ave | Bergen Tpk, [CR 124] |
| 0.22 | Ridgefield Ave | Winant Ave, US 46 |
| 0.22 | CR S-124 ENDS, Ridgefield Park Village | |