To assist those scanner radio enthusiasts who monitor Route 440, this mile marker directory should assist you in determining which support agencies (Police, Fire, EMS) to monitor, should only a mile marker be given as the location.
| Mile Marker | Municipality | County |
| 0.0 - 1.0 | Edison Township | Middlesex |
| 1.0 - 2.6 | Woodbridge Township | Middlesex |
| 2.6 - 5.1 | Perth Amboy | Middlesex |
| 5.2 - 18.0 | Staten Island | NYC |
| 18.0 - 21.9 | Bayonne | Hudson |
| 21.9 - 23.1 | Jersey City | Hudson |
| 23.1 - 24.1 | Bayonne | Hudson |
| 24.1 - 26.1 | Jersey City | Hudson |