Corridor Optimization

Optimizing Geometric Corridor Design Reduces Earthwork Costs

Design roads, highways, and corridors that cost less to build. Adding optimization software to your geometric design process allows you to deliver the lowest-cost design. It also allows you to design faster.

Softree Optimal is a patented alignment optimization program. It can optimize an alignment vertically and horizontally. Generate the lowest cost vertical alignment based on the ground surface, the preliminary horizontal alignment, and the design parameters and constraints entered by the user. Utilize new horizontal alignment optimization functionality to further refine and improve design.

With Softree Optimal, you can:

  • Vertically and horizontally optimize corrridor alignments, such as rural roads, access road, highways, rail and pipeline corridors
  • Plan better corridor locations
  • Quickly compare the costs for various alignments
  • Rapidly evaluate the impact of changes to various design constraints
  • Check the feasibility of proposed designs and constraints
  • Save time and save construction costs in ways that are not possible with manual design.

Example of the Impact of Vertical and Horizontal Optimization

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Key Benefits

  • Save engineering time

    Automate the design of your vertical alignment. Achieves a truly optimal solution, often in a matter of minutes.

  • Quickly compare design variables

    Small changes can produce huge differences in cost. Manipulate design constraints and compare your options.

  • Reduce earthwork costs

    Typical savings of 10-30%. Solves the complex 3D problem of minimizing excavation, embankment and haulage.

  • Costs as you design

    Manipulate an alignment or design constraints and see the associated cost difference in real-time.

  • Compatible

    Independent of design software. Optimize an alignment created in any program. A direct interface is currently available for Civil 3D®.

Optimal Vertical Alignment

Consistently find the lowest-cost design that satisfies your design constraints & standards. Bring down construction costs by 10-30% or more, depending on the project.

Design Time Costing

Quantitively compare multiple alignments and design variables based on construction cost. Know your cost & reduce it.

Horizontal Optimization

Horizontally optimize a corridor based on your vertical optimization constraints and a defined range of IP movement. Resulting improvements over 50% cost reduction are not uncommon.

Optimal Haul Graphic

There's a mass haul, and then there is the Opti-Haul. Opti-Haul graphic is a detailed plan for visually analyzing optimal material movement. Reduce your haulage costs and make construction jobs more efficient.

Smart Pits Technology

Let Softree Optimal recommend the lowest cost borrow and waste pit locations. Define n pits, their capacity and distance from the alignment, and Softree Optimal will recommend which to use.

Compatible Engineering Tool

Softree Optimal works with RoadEng, or it can integrate into other CAD or GIS-based engineering systems through DWG, DGN, or LandXML. A direct export interface is available for Civil 3D.

Automatically Balanced Mass Haul

Balance your road effortlessly. Track and report material movement. Easily account for excess or borrowed material.

Minimize Earthwork Costs

Find the lowest-cost solution. Small adjustments to a vertical alignment can produce huge differences in cut/fill volumes and materials moved.

Feasibility Checker

Some projects are extremely constrained. Quickly check the feasibility of preliminary designs based on your design requirements.

Product Options

Softree Optimal for RoadEng®

Enjoy Softree Optimal within the friendly environment of RoadEng®, Softree’s easy corridor design package.

Softree Optimal

Softree Optimal

Optimize the vertical alignment of a road created in any civil design program. Make your designs better by using this innovative tool to minimize construction costs, save engineering time, and evaluate design parameters.

Softree Optimal for Civil 3D

Download a Free 21-Day Trial

Technical Brochure

Additional Resources

System Requirements

Windows 7, 8, 8.1, or 10 Operating System
2 GB system RAM (4 GB recommended)
Minimum 800 x 600 resolution (more recommended)
Processor or motherboard built-in video is adequate
1 GB disk space


Patent: U.S. Patent No. 9,799,045