Highway Bypass Corridor Survey

50 Kilometers, Zero-Error Alignment

Ridgeway Infrastructure Partners needed design-grade survey across a 50km highway corridor: rugged terrain, live traffic at crossings, and a design team waiting on data. Our crews ran a primary GNSS control backbone the full length, then filled topographic detail with a mix of total station, RTK and drone capture.

The alignment, structures and drainage design all proceeded from a single adjusted dataset — no gaps, no mismatched segments.

• Location: Eastgate Corridor
• Category: Infrastructure & Topographic Survey
• Client: Ridgeway Infrastructure Partners

Long Corridor, Tight Tolerance

The challenge: error accumulates with distance. A small angular drift at kilometer 5 becomes a missed bridge seat at kilometer 40. The corridor also crossed rail, rivers and live carriageway where stopping traffic wasn't an option.

The approach: we closed control loops every 2km back to known datum, flew drone segments between ground crews, and surveyed crossings at night with traffic management. Every segment was adjusted before the next began — drift never got a chance to travel.