SiteBid AI — Culvert Estimate

Trench geometry, bedding, restoration, and extras—all in one pass.

Pipe & Trench

Permit Fees (pass-through)

Productivity & Haul

Rates & Extras

Restoration & Appurtenances

Riprap area (ft²)
Riprap thickness (ft)

Client Info

Markup

Results

Trench width (ft)
2.25
Excavation (yd³)
7.00
Bedding (yd³)
1.00
Backfill (yd³)
6.00
Trips
1
Trucking hours
0.37 h
Dig hours
0.28 h
Backfill hours
0.17 h
Materials cost
$1,262.22
Trucking cost
$34.83
Equipment cost
$54.17
Extras
$0.00
Subtotal
$1,351.23
Base (OH+Cont)
$1,621.47
Total (with profit)
$1,907.61
Permit fees (pass-through)
$0.00
Grand Total
$1,907.61

Sensitivity (share of subtotal)

  • Materials: 93%
  • Trucking: 3%
  • Equipment: 4%

Assumptions (auto-print on quote)

  • Pipe 15" × 24 ft; invert 3 ft; cover 1.5 ft.
  • Bedding 0.5 ft; side clearance 0.5 ft each side.
  • End sections 2 ea; asphalt restore 80 sf; riprap 60 ft² × 0.5 ft.
  • Haul RT 22 min; truck 10 yd³.
  • Overhead 10%, Contingency 10%, Profit 15%.

Inclusions / Exclusions (draft)

Inclusions: trench excavation, bedding, pipe placement, backfill/compaction, trucking/disposal, end sections (if listed), restoration (if listed), mobilization.

Exclusions: rock excavation, dewatering, utility relocations, traffic control beyond noted, permits/fees (listed separately), unsuitable subgrade remediation, paving beyond listed areas.

Proposal Preview

Your Company Name LLC logo
Your Company Name LLC
(555) 555-5555 • bids@yourcompany.com • https://yourcompany.com
123 Main St, Yourtown, MI 49000
MI Contractor #12345
Proposal
9/5/2025
Valid 14 days
Bill To
—
Project
Culvert Installation
Trench, bedding, pipe, restoration, and haul as calculated.
Scope of Work
  • Install 24 ft of 15" pipe; invert depth 3 ft; cover 1.5 ft.
  • Bedding 0.5 ft with 0.5 ft side clearance each side.
  • End sections: 2 ea; asphalt restore 80 sf; riprap 60 ft² × 0.5 ft.
ItemAmount
Materials$1,262.22
Equipment & Labor$54.17
Trucking$34.83
Subtotal$1,351.23
Overhead (10%) + Contingency (10%)$270.25
Profit (15%)$286.14
Total (before permit)$1,907.61
Grand Total$1,907.61
Inclusions
  • Excavation, bedding, pipe placement
  • Backfill/compaction and trucking as noted
  • Restoration items if listed
Exclusions
  • Rock excavation or dewatering
  • Utility relocations or traffic control beyond noted
  • Permits/fees unless listed

Payment terms: Net 15 unless otherwise stated. Scheduling subject to weather and site access.

Acceptance
Client Signature: _______________________________
Printed Name: __________________________________
Date: __________________________________________
Company
Signer: _______________________________
Title: __________________________________
Date: __________________________________