ROAD DESIGN SOFTWARE
STREAM is road and corridor design software that runs directly on the terrain model you already have. Draw the horizontal alignment on the DEM, shape the vertical profile, define the typical section, and STREAM builds the road surface, checks it against the standards you set, and returns the earthwork quantities and drawings.
Corridor design turns a line on the ground into a buildable road surface. The horizontal alignment sets where the road goes, the vertical profile sets how it rises and falls, and the typical section sets how wide it is and how its side slopes meet the ground.
Once those three are defined, everything else follows: the cut and fill at each station, the balance between them, and the drawings the construction crew works from.
Place PI vertices on the terrain and set circular curves by radius, with clothoid transitions where you need them.
Set PVI points, grades and vertical curves; the ground line comes straight from your DEM so the design always sits on real terrain.
Define carriageway width, shoulders and cut/fill batter slopes, then apply cross slope through curves by edge or axis rotation.
Get the section at every station with its cut and fill areas, a station-by-station quantity table, and a mass haul view of the cut/fill balance.
Enter your limits for maximum grade, minimum radius and sight distance; every edit is re-checked and violations are listed with the station and the limit they break.
Cross-sections are taken at the interval you choose, but the road surface is built at the full resolution of the terrain — volumes follow the real surface, not the section spacing.
It covers horizontal alignment with circular curves and clothoid transitions, the vertical profile with grades and vertical curves, the typical section, superelevation, cross-sections with cut/fill areas, and a mass haul view of the earthwork balance.
Yes. The alignment is drawn on your DEM and the ground line at every station is read from it, so the design sits on the real surface rather than an idealised one.
You enter the limits that apply to your project — maximum grade, minimum radius and sight distance — and STREAM re-checks the design on every edit, listing each violation with the station where it occurs and the limit it breaks.
Plan, longitudinal profile and cross-section drawings export to DXF for CAD, and the design report with the quantity table exports to PDF.
No. Cross-sections are taken at the interval you choose for the drawings, but the road surface itself is built at the full resolution of the terrain, so the volume follows the real surface.
Free beta for Windows x64. Works fully offline with GeoTIFF, LAS/LAZ and DXF.
Download STREAM free