LTRA is TxDOT Pre-Certified in the following categories:

1.4.1 Land Planning/Engineering

1.5.1 Feasibility Studies

2.5.1 Water Pollution Abatement Plan

2.14.1 Environmental Document Preparation

3.1.1 Route Studies & Schematic Design – Minor Roadways

3.2.1 Route Studies & Schematic Design – Major Roadways

3.3.1 Route Studies & Schematic Design – Complex Highways

3.4.1 Minor Bridge Layouts

3.5.1 Major Bridge Layouts

3.6.1 Multi-Level Interchange and Exotic Bridge Layout

4.1.1 Minor Roadway Design

4.2.1 Major Roadway Design

4.3.1 Complex Highway Design

4.4.1Major Freeway Interchanges and Direct Connectors

6.1.1 Routine Bridge Inspection

7.1.1 Traffic Engineering Studies

7.2.1 Highway-Rail Grade Crossing Studies

8.1.1 Signing, Pavement Marking and Channelization

8.5.1 Highway-Rail Grade Crossing

9.1.1 Bicycle and Pedestrian Facility Development

10.1.1 Hydrologic Studies

10.2.1 Basic Hydraulic Design

10.3.1 Complex Hydraulic Design

10.4.1 Pump Station – Hydraulics

10.5.1 Bridge Scour Elevations and Analysis

11.1.1 Roadway Construction Management and Inspection

11.2.1 Major Bridge Construction Management and Inspection

12.1.1 Asphaltic Concrete

12.1.2 Portland Cement Concrete

14.1.1 Soil Exploration

14.2.1 Geotechnical Testing

15.1.1 Survey

15.1.2 Parcel Plats

15.1.3 Legal Descriptions

15.1.4 Right of Way Maps

15.2.1 Design and Construction Survey

15.4.1 Horizontal and Vertical Control for Aerial Mapping

18.2.1 Subsurface Utility Engineering