From the glacial lake plains of eastern South Dakota to the granite formations of the Black Hills and the remote Badlands corridor of the west, South Dakota demands engineering that accounts for three geologically and climatically distinct environments — not a single statewide template. Draftech brings the terrain-specific expertise that ConnectSD subgrantees need to produce construction-ready design packages across all of them.
South Dakota's $207 million BEAD allocation, administered by ConnectSD within the Governor's Office of Economic Development, funds fiber expansion across a state that is geographically far more varied than its flat reputation suggests. Eastern South Dakota is characterized by the glacial lake plains — deep, fine-grained soils, seasonal frost heave, and good bore conditions that nevertheless demand careful conduit system design for a climate that cycles between extreme cold and warm-season moisture. The Black Hills in the southwest bring granite and limestone at shallow depths, producing some of the most demanding HDD bore conditions in the region. And the Badlands in the west present remote, low-population-density areas where route engineering must account for access road limitations and long distances between splice points.
ConnectSD's subgrantee roster includes Midco (dominant across eastern South Dakota's larger communities), Bluepeak (formerly Vast Broadband), Alliance Communications, Midstate Communications, Golden West Telecom, and Venture Communications Cooperative — along with smaller rural telephone cooperatives that serve the most isolated portions of the state. For these subgrantees, the path from BEAD award to construction requires OSP engineering that addresses each of these geographic zones with specifications appropriate to the actual conditions on the ground, not generic rural standards borrowed from a different state's playbook.
The Black Hills present bore conditions that rival the hardest formations in the Northeast United States. Granite and limestone at shallow depths — often encountered within 2 to 4 feet of surface grade — produce HDD refusal rates that can halt bore progress entirely when equipment and methodology are not matched to the formation. Unlike softer sedimentary formations where a larger bit and increased pressure can overcome resistance, the Black Hills' igneous granite requires specialized tooling, reduced pullback forces to prevent formation collapse, and conservative bore path selection that prioritizes routing around rather than through the most problematic zones.
Our OSP engineering team prepares bore design packages for Black Hills routes with explicit geologic assumptions, contingency bore path options, and refusal criteria that protect subgrantees from runaway cost growth when formation conditions vary from baseline estimates. Where HDD is not viable at all — a genuine possibility on some Black Hills segments — we prepare alternative installation method packages including jack-and-bore, open-cut rock saw trenching, or aerial plant routing that avoids the subsurface formation entirely. See our technical overview of microtrenching methods and fiber conduit design for more on how we approach hard-formation bore planning.
Western South Dakota's Badlands present a different underground challenge: the layered sedimentary formations of the White River Badlands are soft in some zones and unexpectedly cemented in others, with little surface indication of what lies at bore depth. I-90 and US-14 through the Badlands corridor are primary SDDOT-controlled rights-of-way where highway crossings require SDDOT utility permits with engineered bore design packages attached. Our permitting team coordinates SDDOT submissions alongside the bore engineering, ensuring permit applications reflect the actual formation assumptions and contingency provisions that the bore design is built around.
South Dakota is home to four of the largest tribal nations in the United States, and fiber routes that cross or are built within tribal territories require engagement with tribal governments that operates entirely outside the state permitting framework. The Oglala Sioux Tribe at Pine Ridge Reservation, the Rosebud Sioux Tribe, the Standing Rock Sioux Tribe (which straddles the North Dakota border), and the Cheyenne River Sioux Tribe all exercise tribal sovereignty over infrastructure development on their lands. This means separate environmental review, cultural resource consultation under tribal historic preservation processes, and in some cases coordination with tribal utility authorities that have jurisdiction over how fiber infrastructure is designed and routed.
BEAD subgrantees building toward or through tribal territories in South Dakota cannot assume that SDDOT permitting authority covers the full route. Where fiber must cross or pass through reservation boundaries to reach unserved locations — a common scenario in the western half of the state — tribal coordination must begin early in the project development process, well before construction mobilization. Our team has experience navigating multi-authority permitting environments where state, county, federal, and tribal processes run on different timelines and require different coordination approaches. We integrate tribal coordination into the project schedule as a parallel workstream rather than a step that begins after state permitting is complete.
The eastern South Dakota plains — from Sioux Falls through the agricultural corridor to the North Dakota border — carry the bulk of the state's existing pole infrastructure, owned primarily by Xcel Energy and Montana-Dakota Utilities. Both utilities use joint use processes that require field-verified pole loading calculations before authorizing make-ready work orders. The South Dakota Public Utilities Commission (SD PUC) oversees pole attachment regulation, but the practical goal for BEAD subgrantees is to move through the utility review process efficiently, not to reach a dispute that requires Commission involvement.
Eastern South Dakota's aerial engineering adds a loading consideration unique to this corridor: the state sits in a zone of significant combined ice and wind loading events during winter. Ice accumulation on aerial strand combined with sustained wind pressure creates loading conditions that can stress poles already carrying telephone and cable TV attachments to near-capacity. Our pole loading analysis uses O-Calc Pro with field-measured span lengths, existing attachment heights and wire tensions, and site-specific wind and ice zone data to produce accurate loading assessments before attachment applications are submitted. Poles that cannot carry the new fiber under NESC Grade B requirements are identified early, so replacement decisions are made during design rather than becoming change orders during construction. Our blog on make-ready engineering timelines for fiber deployment covers how to structure this workflow for efficient BEAD project delivery.
Construction Method Note — South Dakota: South Dakota's diverse geology means that the optimal construction method varies dramatically by zone. The glacial lake plains of the east favor aerial plant with underground crossings at road intersections. The Black Hills strongly favor aerial routing wherever terrain permits, given the extreme bore difficulty of granite formations. The Badlands and western plains are predominantly aerial. Draftech designs each segment for the method that is both technically feasible and permittable — not the method that minimizes upfront engineering effort. See our breakdown of aerial vs. underground construction costs by terrain for context on how these decisions affect total project cost.
South Dakota's rural telephone cooperatives — Golden West Telecom, Alliance Communications, Midstate Communications, and Venture Communications Cooperative among them — are positioned as key BEAD subgrantees for the state's most rural service areas. These cooperatives bring deep local knowledge of their territories but often need external engineering support to produce the construction-ready deliverables that BEAD milestone compliance requires. Draftech's FTTH design support for South Dakota cooperatives covers the full workflow: service area validation against the BEAD Location Fabric, high-level network topology and splitter placement, strand-level construction drawings, pole-by-pole make-ready engineering, and SDDOT/tribal permitting packages — all coordinated to run in parallel rather than as a sequential queue that compresses the construction schedule.
Our field survey teams capture the existing infrastructure data that ground-truth FTTH design assumptions: pole condition, existing attachment inventory, span measurements, anchor assessments, and bore path conditions at planned crossing locations. For South Dakota routes that cross between Xcel Energy and Black Hills Energy territories — as many BEAD service areas do — we manage the separate joint use processes with each utility in a coordinated submission workflow. Draftech is a Certified MBE currently active in 22 states with full deployment capability across all 50. For more on what BEAD subgrantees need from their engineering partner, read our analysis of BEAD funding engineering requirements for 2026.
Common Questions
The Black Hills present some of the most challenging directional bore conditions in the western United States. The region's granite and limestone formations produce formation hardness and inconsistency that regularly cause pilot tube deviation, bit wear rates that are orders of magnitude higher than in soft-soil environments, and bore refusal at depths well below design intent. Our engineers prepare bore design packages for Black Hills routes with geologic review, contingency specifications for casing and alternative bore paths, and explicit refusal criteria and cost escalation provisions that protect subgrantees from uncontrolled cost growth when formation conditions vary from baseline assumptions.
South Dakota's tribal nations — including the Oglala Sioux Tribe at Pine Ridge, the Rosebud Sioux Tribe, the Standing Rock Sioux Tribe, and the Cheyenne River Sioux Tribe — exercise tribal sovereignty over infrastructure built on their lands. This means fiber projects that cross or are built within tribal territory require coordination with tribal government authorities that is separate from and independent of SDDOT permitting or state ROW processes. Tribal environmental and cultural resource review processes apply, and in some cases tribal utility authorities have jurisdiction over how infrastructure is designed and built. Draftech coordinates these tribal permitting processes alongside state and federal permitting, recognizing that timeline assumptions built around state processes alone will be inadequate for routes that touch tribal land.
Eastern South Dakota's glacial lake plains have deep, fine-grained soils that hold moisture through winter and experience significant freeze-thaw cycling between late fall and early spring. This seasonal movement produces frost heave forces that can displace buried conduit systems, lift vault lids above grade, and stress conduit-to-vault entry seals in ways that create moisture intrusion paths. Underground fiber plant in this region requires burial depths and conduit anchoring specifications that account for frost heave magnitude — which varies by soil type and moisture availability across the glacial lake terrain. Our engineers incorporate county-level frost depth data and soil classification into underground design packages for eastern South Dakota routes.
Xcel Energy serves much of eastern South Dakota, while Black Hills Energy covers the western portion of the state including the Black Hills region. Montana-Dakota Utilities has presence in the northeastern corridor. All three use joint use application processes that require field-verified pole loading calculations. The South Dakota Public Utilities Commission (SD PUC) handles pole attachment disputes when they cannot be resolved directly with the utility. For BEAD subgrantees with tight milestone schedules, our make-ready engineering workflow — field survey, O-Calc Pro loading calculations, application preparation, and active response to utility work orders — is designed to move attachment applications through the utility review process without the delays that come from incomplete or inaccurate submissions.
Get Started
Whether you are a ConnectSD subgrantee managing engineering milestones in the Black Hills, a cooperative deploying FTTH across the glacial lake plains, or an ISP coordinating tribal land fiber routes in the western counties, Draftech delivers integrated OSP engineering that accounts for South Dakota's full geographic range. From field survey through SDDOT permitting and construction-ready plan sets, our team works as an extension of yours.
Contact Our Engineering TeamOr reach us directly: info@draftech.com | 305-306-7406