Tunnel Boring & Heavy Civil Equipment worked example

Transport Cost at 99% billable route share: a worked example in tunnel boring & heavy civil equipment

This scenario runs the transport cost calculation on the strong side: 99% billable route share, with every other input held at its documented default. Use it when planning launch-shaft logistics to weigh per-mile superload hauling against the fixed permit and escort costs that apply regardless of distance.

The inputs for this scenario

  • Oversize Load Miles: 420 miles (unchanged)
  • Heavy-Haul Rate per Mile: 38 $/mile (unchanged)
  • Billable Route Share: 99 % (raised for this scenario; the documented default is 90)
  • Permits & Escort Mobilization: 42,000 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Total = oversize miles x heavy-haul rate x (billable share รท 100) + permit mobilization) to the inputs above produces each figure below.
  • At this operating point the engine returns 57,800 $ for total transport cost, the number this scenario is built around.
  • At this operating point the engine returns 138 $ / piece for transport cost per unit.
  • At this operating point the engine returns 15,800 $ for variable transport cost.
  • At this operating point the engine returns 42,000 $ for fixed transport cost adder.

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 2.55% above the baseline at 57,800 $.
  • Use it when quoting a TBM delivery, comparing routing options, or setting the mobilization budget line before a convoy moves. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Total transport cost: 57,800 $ (headline result)
  • Transport cost per unit: 138 $ / piece
  • Variable transport cost: 15,800 $
  • Fixed transport cost adder: 42,000 $

Run it with your numbers

  • Every input above is editable in the live Transport Cost calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.