Design Nine, Inc.

We Know Railroad

Website

About the firm

Design Nine, Inc. is a St. Louis-based railroad engineering practice formed in 1986 by engineers from the former Missouri Pacific Railroad Company. It focuses on providing specialized railroad engineering to Class I railroads, regional and short-line railroads, switching and terminal railroads, and the industries served by those railways. Services span conceptual planning, track design, structural rehabilitation, construction support, and drafting across the entire project lifecycle.

Established
1986
Team
Small
Firm type
Transportation Engineering · Structural Engineering · Civil Engineering

Credentials

FRA on-track safety compliant · FRA bridge worker safety compliant · e-RAILSAFE compliant · OSHA certified · TWIC certified

Capabilities

Railway Engineering

Service website

Comprehensive track design, rail site development, and facility layout planning for diverse railway operations.

  • Conceptual Planning

    Developing initial track layouts and feasibility studies utilizing aerial photometrics to optimize rail design.

  • Track Design

    Preparing detailed track alignments, profiles, cross sections, and construction-ready plan sets.

  • Site Development

    Designing new track facilities and integrating civil engineering elements like earthwork and drainage.

  • Capacity Expansion

    Engineering yard expansions, industrial siding, and track additions to handle increased rail volumes.

  • Geometric Improvements

    Modifying existing alignments and profiles to improve train operations, speeds, and safety.

  • Industrial Trackage

    Designing dedicated rail infrastructure, spurs, and connections for manufacturing and distribution facilities.

Structural Services

Service website

Inspection, analysis, and rehabilitation of railroad-related structures, bridges, and unloading facilities.

  • Bridge Rehabilitation

    Evaluating structural conditions and designing targeted repair and rehabilitation plans for rail bridges.

  • Structural Surveys

    Conducting comprehensive field inspections of aging railway structures to evaluate maintenance needs.

  • Deck Replacements

    Designing and planning structural timber and steel deck replacements for active rail bridges.

  • Steel Bridge Evaluation

    Performing load capacity analyses and structural evaluations of steel railway bridges.

  • Pit Inspection and Analysis

    Evaluating structural integrity and performing concrete analysis for rail unloading pits.

  • Culvert Inspections

    Inspecting and analyzing under-track drainage culverts to ensure safe operating conditions.

Technical Services

Service website

Field surveying, drafting, cost estimating, and project support throughout the construction lifecycle.

  • Existing Facilities Surveying

    Performing detailed typographic and topographic field surveys of existing tracks, utilities, and drainage constraints.

  • Construction Support

    Providing on-site construction staking, progress monitoring, and final inspection services.

  • Drafting Services

    Creating precise engineering plans, exhibits, and technical documents using AutoCAD and MicroStation.

  • Construction Cost Estimates

    Developing conceptual and refined quantity-based cost estimates to assist with project budgeting.

  • Materials Inspection

    Inspecting construction materials and tracking project documentation to ensure specification compliance.

Industries

Rail

Projects