Road Construction Break-Even Analysis: $91K Monthly Revenue

Fixed costs $17.3K/mo Overhead base

Contribution margin 90% After variable costs

Break-even revenue $19.2K/mo Revenue floor

Break-even timing Month 1 Launch month

Break-even calculator

Test how monthly revenue, direct costs, and overhead shape break-even for a road construction business.

Lean Base Full

Monthly revenue More revenue gives you more room to cover direct and fixed costs. $ Low volume Peak work Variable expenses Direct costs like labor, materials, fuel, and subcontract work that rise with revenue. $ Light direct Heavy direct

Money available to cover fixed costs $1,326,000 $1,478,000 revenue - $152,000 variable expenses

Margin ratio

90%

Covers fixed costs

Yes

Fixed monthly costs Monthly overhead the project margin must cover before profit starts. $ Lean overhead Large team

Break-even chart Revenue Total costs

Which road construction expenses stay fixed, and which move with sales volume?

Cost classification

Break-even gets unreliable when monthly overhead, crew capacity, and job-level inputs are mixed together. Use fixed costs for the base load, variable costs for awarded work, and semi-fixed or semi-variable costs where capacity or usage drives the step-up.

Expense	Cost	Break-Even Treatment	Common Mistake
Office Rent	Fixed	Treat the $8,000 monthly amount as base overhead in every break-even period.	Treating yard or office rent as a project expense.
General Business Insurance	Fixed	Carry the $2,500 monthly base policy as overhead, not as a per-job charge.	Tying the base policy directly to job volume.
Vehicle Lease & Maintenance	Semi-fixed	Model the $3,000 monthly baseline as overhead, then step it up when fleet use or routes expand.	Treating all vehicle spend as fixed.
Heavy Equipment Operator Payroll	Semi-fixed	Use operators as crew capacity blocks; Year 1 starts with 3.0 FTE at $75,000 each.	Treating idle crew time as variable.
New Highway Direct Labor	Variable	Apply the $50,000 per new highway project against awarded work volume.	Excluding payroll tax and overtime pressure.
Asphalt Overlay Asphalt Mix	Variable	Apply the $1.50 per overlay unit rate to overlay production volume.	Using one material rate for every bid.
New Highway Equipment Fuel	Variable	Apply the $20,000 per new highway project fuel input to project usage.	Treating fuel like overhead.
New Highway Equipment Depreciation Allocation	Semi-variable	Use the 0.4% project-linked allocation for break-even margin, separate from cash debt service.	Confusing accounting depreciation with cash debt service.

How does break-even change from a lean start to a full road construction run?

Scenario table

As backlog deepens, crew use rises, and more equipment is owned instead of rented, break-even gets easier to cover. The base case is the best read because it sits between a thin launch mix and a fully loaded operating plan.

Planning case only; actual break-even will move with bid mix, job timing, and crew utilization.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean backlog case	$1.77M	$268K	$773K	84.9%	$733K	Still clears break-even, but the cushion is thinner.
Base operating mix	$3.72M	$493K	$1.28M	86.7%	$1.94M	Comfortable break-even cushion if utilization stays steady.
Full utilization case	$5.83M	$669K	$1.82M	88.5%	$3.34M	Strongest cushion, but only if crews and equipment stay fully used.

What breaks first if awarded work slows or project margins tighten?

Stress test

The current plan clears break-even by a wide margin: about $1.48m in average monthly Year 1 revenue versus a $91k break-even point. The risk is not the floor itself; it’s losing that cushion when awards slow, crews sit idle, or project costs run hot.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$91,000	$1,387,333 cushion	Year 1 revenue sits far above the floor.
Revenue shortfall	Monthly billings fall 20% from the Year 1 forecast.	$91,000	$1,091,667 cushion	Slower awards cut room, but the business still covers break-even.
Fixed-cost pressure	Monthly payroll and overhead rise 10%.	$100,100	$1,378,233 cushion	Higher insurance, rent, or payroll lifts the floor quickly.
Margin pressure	Sales commission and bid prep rise to 50% of revenue.	$169,000	$1,309,333 cushion	Higher bid costs and commissions squeeze margin on every awarded job.
Combined pressure	Billings fall 20%, monthly payroll and overhead rise 10%, and variable spend rises to 50% of revenue.	$186,000	$997,000 cushion	Idle crews, slow approvals, or change-order disputes can erase cushion fast.

What should a road construction founder verify before locking in crews, yards, and equipment?

Founder checklist

Test the backlog against the $91K monthly break-even before you commit to more trucks, crews, and yards. Keep the $2.59M buildout and the Month 1 cash floor of $838K separate so you don’t confuse capex with operating strength.

1Backlog Cover$91K/mo

Verify awarded work can clear the monthly break-even before you scale crews or equipment, because road work is lumpy and one weak month can strain cash fast.

2Cost Stack$2.59M + $77.3K/mo

Keep the planned fleet, office, tech, compliance, and bridge gear spend separate from about $77.3K a month of base overhead and Year 1 payroll.

3Bid Floor5.0% load

Price every bid from direct project cost plus the 5.0% Year 1 sales and bid-prep load, or a win can still miss break-even.

4Cash Floor$838K

Confirm you can fund the Month 1 minimum cash need before the first big equipment and setup spend lands, since the cash trough sits at launch.

5Crew Ramp3 FTE

Keep the first three heavy equipment operators tied to real utilization before adding more managers or operators, because idle payroll pushes break-even out.

6Bid ReadinessPre-award

Lock supplier quotes for asphalt, aggregate, concrete, rebar, fuel, and disposal, and confirm bonding, insurance, receivable timing, and weather slack before municipal bids.