Overcoming Environmental Constraints and High-Cost Terrain in BEAD Deployments

The Challenge Facing the Next Wave of BEAD Deployments

As broadband providers prepare for the next wave of Broadband Equity, Access, and Deployment (BEAD) funding, some of the most difficult deployment areas are likely to remain. Challenging terrain, waterways, protected areas, and other environmental constraints can make the final connections significantly more complicated and expensive to build.

For projects that rely on underground fiber, those challenges can extend beyond construction costs. Ground disturbance can bring additional environmental and historic preservation requirements, including reviews associated with the National Environmental Policy Act (NEPA) and Section 106 of the National Historic Preservation Act.

The result can be a project that is technically feasible but difficult to execute within the required schedule and budget. Environmental reviews, permitting, engineering changes, and specialized construction can add months to a deployment timeline and substantial costs before fiber construction even begins.

For BEAD-funded projects operating under a defined deployment schedule, those delays matter. Every month spent resolving a difficult route is another month that can affect construction milestones, customer activation, and the overall economics of the project.

Designing Around Environmental Constraints

One way to reduce that risk is to reconsider how the network crosses difficult areas.

Free Space Optics (FSO) communication can provide a high-capacity connection between two points without requiring a fiber cable to be installed underground between them. When an FSO link is mounted to existing infrastructure, it provides an alternative to trenching or directional drilling across a particularly difficult section of a route.

That makes FSO especially useful for the gaps that are hardest to reach with conventional fiber construction.

Dayton Photonics' Theia™, for example, can provide temporary or permanent optical connectivity between existing network points, giving operators another option when construction schedules, terrain, or environmental constraints make an immediate fiber connection impractical.

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Where FSO Can Help

Avoid Excavation in Difficult Areas

Because an FSO link does not require an underground cable between endpoints, it can eliminate the need to excavate along that portion of a route.

That distinction can be particularly valuable when a proposed fiber path crosses waterways, steep terrain, railroads, environmentally sensitive areas, or other locations where excavation can introduce additional permitting, construction, or review requirements.

The applicable environmental requirements will depend on the specific project, funding program, location, and deployment design. FSO does not automatically eliminate those requirements, but avoiding excavation can simplify the scope of work that needs to be evaluated.

Avoid High-Cost Construction

Some of the remaining gaps in broadband deployment are also some of the most expensive places to build.

Rock, ravines, waterways, and other physical obstacles can turn a relatively short fiber segment into a major construction project. Trenching may require specialized equipment, while HDD can involve additional engineering, permitting, and restoration costs.

An FSO link can provide another way across the gap.

For a point-to-point connection with a clear line of sight, the physical characteristics of the terrain between the endpoints become far less significant. A ravine, rocky area, or other obstacle that would complicate underground construction can be crossed without excavating through it.

Keep Deployment Schedules Moving

BEAD projects have defined milestones and deadlines, making schedule risk an important consideration during network design.

FSO gives operators an immediate, high-throughput bridge while underground fiber permits are pending—or serves as the permanent primary link when digging isn't viable.

Rather than allowing one challenging crossing to determine the schedule for an entire project, operators can evaluate whether an optical link can provide connectivity either in place of traditional fiber or in the interim.

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A More Flexible Approach to BEAD Deployment

The next phase of broadband construction will require operators to work through increasingly difficult deployment environments. Environmental constraints, challenging terrain, construction costs, and project timelines all need to be considered when selecting a network architecture.

Underground fiber will remain the foundation of broadband infrastructure. FSO provides another tool for the portions of a route where conventional construction becomes difficult, expensive, or slow.

For BEAD projects, that flexibility can be valuable. A carefully designed FSO link can help operators maintain connectivity, avoid excavation along difficult sections of a route, and keep those sections from dictating the schedule for the entire project.

Dayton Photonics' Theia™ gives network operators another option for crossing difficult gaps, whether as a permanent connection or as a bridge to a future fiber build.

When the route gets complicated, sometimes the most practical path forward is above it.