Road BOQ Estimator
Upload the condition survey. The estimator measures every station, every culvert and every structure, prices it against your own rate schedule, and returns a complete bill of quantities. Then it prices the whole road again in a second, independent engine — and if the two disagree by a pesewa, it says so rather than handing you a number.
A complete CESMM4-coded bill for a low volume road in minutes — checked by two independent engines that must agree before it is issued.
A complete CESMM4-coded bill for a low volume road in minutes — checked by two independent engines that must agree before it is issued.
All applicationsfrom $25/month
One subscription, monthly or annual, unlocks every BESPA application. 7 days free, cancel any time. The demo on this page is free to try.
Built for the real job.
Two engines, one answer
A Python engine prices the road in seconds; the original Excel master estimator then recalculates the same road independently. The bill is issuable only when both agree. Neither engine is trusted on its own.
Measured, not estimated
Every station from start to finish at 50-metre intervals — roadworks, drainage, structures and ancillaries — each quantity carrying the working that produced it.
Culverts in full detail
19 box-culvert types from 2×2 to 4×4 metres, one to four cells, with reinforcement scheduled across 14 bar marks; pipe culverts 600 to 1800 mm; U-culverts 700×900 to 1800×1800. Steel is priced by diameter under its own code, not averaged.
Your rates, not ours
Priced from your own master rate workbook. New rates or a new item means replacing one file — no rebuild, no developer, no waiting.
Traceable months later
The rate workbook is fingerprinted and recorded against every run, so any figure can be traced to the rates that produced it — and two bills priced under different rates are flagged as not comparable.
It tells you when it is unsure
Nineteen reconciliation tests re-derive the totals independently. Anything that fails is shown on the bill's own banner. A parameter the survey did not supply is reported, never silently defaulted.
- ✓Two independent engines price every road and must agree before issue.
- ✓Nineteen reconciliation tests re-derive the totals on every bill.
- ✓Every bill records the fingerprint of the rate workbook that priced it.
- ✓The full culvert and reinforcement detail listed above.
- ✓The measurement interval, the coding, and the item-by-diameter steel pricing.
Price a sample low volume road.
Change the road and culvert inputs. Two independent engines price the same CESMM4 bill and all 19 reconciliation checks must pass.
Indicative sample — a simplified calculator, not the module. The module runs on your own data, and the figures and standards it applies are the ones you enter.
Four steps, start to priced bill.
- 01Upload the condition survey — the Excel form, or the export from the field app.
- 02The Python engine measures and prices the road; the Excel master recalculates it independently.
- 03The two totals are compared and nineteen reconciliation tests are re-derived.
- 04Download the priced bill and the run report, with the rate workbook recorded against it.
What you take away.
- →Priced bill of quantities, CESMM4-coded (Excel)
- →Culvert and reinforcement schedules by bar mark and diameter
- →Run report — survey, rate workbook and its fingerprint
- →Agreement and reconciliation record for the file
BESPA Expert Systems is suitable for the preliminary design and feasibility study phase of civil infrastructure projects. Outputs are engineering aids, not certified designs: a qualified professional engineer must check and sign off any output before it is issued for construction. Bespa produces a priced bill for review. Rates are those in the master workbook supplied by the user; the estimator checks its own arithmetic, not the market. A bill must be reviewed by a qualified quantity surveyor or engineer before it is issued for tender.
Geometric Design of Roads
Design-speed-driven horizontal and vertical alignment for low volume roads — superelevation, transitions, sight distance and earthworks.
Box Culvert Design (AASHTO)
Design, check and draw reinforced concrete box culverts of one to four cells to AASHTO LRFD — every face reinforced, the outlet protected against scour, and the quantities written as per the Road BOQ Estimator's (a separate module) bill items.
Questions on road boq estimator?
Write to Dr. Kwasi Osafo Ampadu, or use the feedback form on the home page.
Emailinfo@bespa.online