For more than 70 years, DGL has been providing professional consulting services to state departments of transportation.

 

Ohio Department of Transportation (ODOT)

DGL is a certified Disadvantaged Business Enterprise (DBE) and
Small Business Enterprise (SBE) with ODOT. Our prequalifications include:

  • Bicycle Facilities & Enhancement Design

  • Non-Complex Roadway Design

  • Complex Roadway Design

  • Interchange Operations / Modification / Justification Study

  • Safety Study

  • Limited Right-of-way Plan Development

  • Complex Right-of-way Plan Development 

  • Level 1.1 / 1.2 Bridge Design

  • Level 2 Bridge Design

  • Level 1 Bridge Inspection

  • Basic Traffic Signal Design

  • Traffic Signal System Design

  • Limited Lighting Design

  • Construction Management Firm

Indiana Department of Transportation (INDOT)

DGL is a certified Disadvantaged Business Enterprise (DBE) with the Indiana Department of Transportation. Our prequalifications include:

  • 3.1 - Non-Complex Traffic Capacity and Operations Analysis

  • 6.1 - Topographic Survey Data Collection

  • 8.1 - Non-Complex Roadway Design

  • 8.2 - Complex Roadway Design

  • 8.3 - Roundabout Design

  • 9.1 - Level 1 Bridge Design

  • 10.1 - Traffic Signal Design

  • 14.5 - Bridge Load Capacity Rating & Other Bridge Analysis/Testing

  • 17.1 - Drainage Design for Driveway Permits

  • 17.2 - Small Structure and Pipe Hydraulic Design

  • 17.3 - Storm Sewer and Detention Design