For its entire length, CR 109 is signed as part of primary route 17.
| Mile | Street Name | Feature (South to North) |
| 0.00 | CR 109 BEGINS, Harrington Park Boro | |
| 0.00 | Lafayette Rd | (Harriot Rd, CR 53) | Tappan Rd, CR 39 {signal} |
| 0.15 | Lafayette Rd | West Shore Railroad {at-grade crossing} |
| 0.17 | Lafayette Rd | Unnamed stream {pipe} |
| 0.57 | Lafayette Rd | Unnamed stream {culvert} |
| 0.76 | Lafayette Rd | Unnamed stream {culvert} |
| 0.94 | Lafayette Rd | [Blanch Ave, CR S-109] |
| 0.94 | CR 109 turns left onto Blanch Ave | |
| 0.98 | Blanch Ave | Unnamed stream {pipe} |
| 1.37 | Entering Old Tappan Boro | |
| 1.44 | Cripple Bush Rd | Unnamed stream {pipe} |
| 1.61 | Cripple Bush Rd | Unnamed stream {pipe} |
| 1.73 | Cripple Bush Rd | Westwood Ave, CR 110 |
| 1.73 | CR 109 ENDS, Old Tappan Boro | |
| Mile | Street Name | Feature (South to North) |
| 0.00 | CR S-109 BEGINS, Norwood Boro | |
| 0.00 | Blanch Ave | Livingston St, CR 505 {signal} |
| 0.62 | Blanch Ave | Tappan Rd, CR 39 {signal} |
| 0.95 | Blanch Ave | West Shore Railroad [at-grade crossing} |
| 1.04 | Blanch Ave | Branch Hackensack River {bridge} |
| 1.15 | Entering Harrington Park Boro | |
| 1.19 | Blanch Ave | Unnamed stream {pipe} |
| 1.34 | Blanch Ave | Branch Hackensack River {bridge} |
| 1.39 | Blanch Ave | Lafayette Rd, CR 109 |
| 1.39 | CR S-109 ENDS, Harrington Park Boro | |