Interactive tool
Get a budgetary planning range for outside-plant fiber construction. Tune the route, fiber count, and build mix to see how the estimate moves in real time. This tool is for estimation only, not a binding quote. Includes planning notes for BEAD (Broadband Equity, Access, and Deployment) subgrantee builds.
Estimation Only
This is not a finalized quote or contract price.
Outputs are budgetary planning ranges for early capital planning, grant drafts, and stakeholder alignment. AMT66 does not treat calculator results as an offer, bid, or commitment.
Accuracy: Unit costs are anchored to public 2024-2026 OSP benchmarks (including FBA/Cartesian 2025 medians of about $42K/mi aerial and $95K/mi underground for 48-count suburban backbone). Most firm bids land within roughly ±40% of a planning midpoint once field data is in, but difficult routes can exceed that.
Interactive tool
Numbers update instantly as you change inputs.
BEAD labels your scenario for grant planning context and shows BEAD-specific notes below the estimate. The construction formula is the same for all types; only the explanatory copy changes.
Total fiber route, measured along the proposed path.
Fiber count of the main backbone cable.
Share of route on aerial pole lines; the remainder is buried.
Dominant terrain along the route.
Routing engineering, pole loading studies, ROW permits.
Schedule oversight, QA inspection, federal reporting.
Estimation Only
This is not a finalized quote or contract price.
Outputs are budgetary planning ranges for early capital planning, grant drafts, and stakeholder alignment. AMT66 does not treat calculator results as an offer, bid, or commitment.
Accuracy: Unit costs are anchored to public 2024-2026 OSP benchmarks (including FBA/Cartesian 2025 medians of about $42K/mi aerial and $95K/mi underground for 48-count suburban backbone). Most firm bids land within roughly ±40% of a planning midpoint once field data is in, but difficult routes can exceed that.
Planning Estimate (Not a Quote)
$4.79M
range $3.26M - $6.33M
Mid-point planning figure only. The low / high band is illustrative; firm pricing requires field validation and may fall outside this range.
Loaded cost / mile
$96K
50.0 miles total
Cost / strand-mile
$665
144-count fiber
Construction mix
60% aerial · 40% buried
How this estimate is calculated
Each step shows the math and why we chose the benchmarks behind it. Baselines come from the Fiber Broadband Association / Cartesian Fiber Deployment Cost Annual Report 2025 and 2024-2026 OSP planning surveys used on BEAD and carrier builds.
1.Blend aerial and buried unit costs
$50K-$96K/mi
60% × aerial ($26K-$44K/mi) + 40% × buried ($85K-$175K/mi) at 48-count suburban baseline
Why these numbers: Aerial $26K-$44K/mi brackets the Fiber Broadband Association / Cartesian, Fiber Deployment Cost Annual Report 2025 median of about $42K/mi (~$8/ft installed). The low end assumes light make-ready on existing poles in suburban ROW; the high end allows moderate attachment work without full rebuild. Buried $85K-$175K/mi brackets the same report's ~$95K/mi median (~$18/ft). The low end is open-trench or straightforward bore; the high end covers rock, utility conflicts, and full restoration. We blend by your aerial/buried split because most BEAD and carrier routes are mixed plant, not 100% one method.
2.Apply terrain multiplier
$42K-$82K/mi
Rural (open ROW) × 0.85
Why these numbers: Suburban (×1.0) is the anchor terrain in industry cost surveys. Urban (×1.4) adds allowance for lane closures, traffic control, shorter bore runs, sidewalk restoration, and congested utility corridors that show up on BEAD anchor-institution and downtown routes. Rural (×0.85) reflects longer spans and simpler ROW in open country, which often lowers per-mile construction even when route length is longer. This is a planning factor, not a county-level cost database.
3.Apply strand-count multiplier
$55K/mi low · $81K/mi mid · $107K/mi high
144-count vs 48-count baseline × 1.30
Why these numbers: Industry reports normalize backbone costs to 48-count cable, so 48 = ×1.0. Below 48, labor and setup dominate, so cost does not fall proportionally (12-count = ×0.78, 24-count = ×0.88). Above 48, cable weight, duct fill, splice cases, and hauling drive material cost (144-count = ×1.3, 288-count = ×1.55, 864-count = ×2.05). BEAD middle-mile and community anchor designs often land at 96-144 count, which is why 144-count is the default in this tool.
4.Multiply by route length
$2.74M low · $4.03M mid · $5.33M high construction
Per-mile mid × 50.0 miles
Why these numbers: Outside-plant contractors and grant budgets are scoped per routed mile along the approved path, not as a lump sum. Multiplying the adjusted per-mile band by your route length gives a construction subtotal suitable for early BEAD budget worksheets and internal capital planning before a firm bid. It does not yet include design, PM, electronics, or drops.
5.Add design and permitting
$323K
+8% of construction mid ($4.03M)
Why these numbers: Routing, pole-loading analysis, make-ready coordination, and ROW permits typically run 6-10% of construction on OSP programs. We use +8% as a planning allowance because BEAD and state broadband offices expect engineered routes before construction drawdown, even when construction is bid separately.
6.Add project management
$436K
+10% of construction mid + design ($4.36M)
Why these numbers: Schedule oversight, contractor QA, inventory control, and grant reporting commonly add 8-12% on federally funded fiber builds. We use +10% applied to construction plus design because PM effort scales with route complexity and compliance burden, not cable count alone.
7.Planning range (low / mid / high)
$3.26M · $4.79M · $6.33M
Low and high construction bands carry through the same add-on percentages
Why these numbers: Field programs often land within about ±40% of a planning midpoint once pole data and make-ready are known, but difficult urban plant or heavy make-ready can exceed that. Showing low / mid / high avoids a false sense of precision from a single number.
BEAD planning notes
Cost Breakdown
sums to $4.79M
Fiber materials
$1.29M
Cable, drop fiber, slack loops · 27%
Hardware & passive
$524K
Splice cases, terminals, conduit, hangers · 11%
Construction labor
$2.22M
Aerial placement, boring, restoration · 46%
Design & permitting
$323K
Routing, pole loading, ROW permits · 7%
Project management
$436K
Schedule, QA, customer reporting · 9%
Assumptions
Optional follow-up
Share your contact info and we will send a PDF with itemised materials, splicing assumptions, and BEAD subgrantee scoring guidance before your Mission Fit call.
Next step
Bring your route, funding source, and timeline. In 30 minutes we will confirm whether AMT66 is the right partner for product supply, PM oversight, or a bundled BEAD-ready scope.