Cost structure / standard tiers
IPI routing is priced as a through rate from the origin port to the inland destination, bundling ocean and rail legs, with cost varying by rail ramp type and distance.
| Routing Type | Description | Typical Cost Characteristic |
|---|---|---|
| On-dock rail IPI | Container moves directly from vessel to rail at the marine terminal | Lowest drayage exposure; through rate often most competitive |
| Near-dock/off-dock rail IPI | Container drayed short distance to a nearby rail ramp | Additional drayage fee, $150-300, added to through rate |
| Standard IPI through-rate premium vs. ocean-only to coast | — | +$500-1,500 depending on inland destination distance |
| Rail dwell at inland ramp (after free time, 1-2 days typical) | Per day | $25-75/day |
| RIPI (alternate-gateway routing) | Reverse of IPI structure | Similar through-rate, priced by origin rail ramp |
On-dock rail facilities (where rail tracks run directly into the marine terminal) generally produce faster transit and lower total handling cost than routings requiring an intermediate drayage leg to reach the rail ramp.
Risk mitigation / operational guidance
When booking IPI cargo, confirm whether the routing uses on-dock or near-dock rail — on-dock routings avoid an extra drayage leg and generally clear the terminal faster, reducing demurrage exposure for cargo awaiting rail loading. Confirm with the carrier whether free-time clocks for IPI cargo start at vessel discharge or at arrival at the inland ramp, as this varies by carrier and lane and is a common source of confusion. Track rail ramp dwell time separately from ocean transit time, since inland rail yards have their own free-time windows and per diem structures distinct from the marine terminal's. During periods of high import volume, some carriers pause accepting certain IPI bookings at congested ports and shift cargo to alternative gateways — build schedule flexibility into inland delivery commitments accordingly, and for inland destinations within a few hundred miles of the coast, compare the IPI through rate against direct drayage options.