Tunnel Boring & Heavy Civil Equipment worked example

Transport Cost at 65% billable route share: a worked example in tunnel boring & heavy civil equipment

Suppose billable route share falls to 65%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimates the cost to move TBM and heavy civil components over the road from per-mile heavy-haul rate, billable route share, and fixed permit and escort mobilization.

The inputs for this scenario

  • Oversize Load Miles: 420 miles (held at the documented default)
  • Heavy-Haul Rate per Mile: 38 $/mile (held at the documented default)
  • Billable Route Share: 65 % (the input this scenario stresses; the baseline uses 90)
  • Permits & Escort Mobilization: 42,000 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Total = oversize miles x heavy-haul rate x (billable share รท 100) + permit mobilization.
  • Total transport cost works out to 52,374 $ at these inputs, and this is the headline figure for the scenario.
  • Transport cost per unit works out to 125 $ / piece at these inputs.
  • Variable transport cost works out to 10,374 $ at these inputs.
  • Fixed transport cost adder works out to 42,000 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where billable route share sits at 90% and the headline result is 56,364 $, this scenario comes in 7.08% below the baseline at 52,374 $.
  • It multiplies oversize miles by the heavy-haul rate and the billable route share, then adds the fixed permit and escort mobilization to give a total and a per-mile figure. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Total transport cost: 52,374 $ (headline result)
  • Transport cost per unit: 125 $ / piece
  • Variable transport cost: 10,374 $
  • Fixed transport cost adder: 42,000 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Transport Cost calculator, set billable route share to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.