TxDOT Precertification Categories

1.3.1        Subarea/Corridor Planning
1.4.1        Land Planning/Engineering
1.5.1        Feasibility Studies
1.6.1        Major Investment Studies
3.1.1        Route Studies and Schematic Design                
                (Minor Roadways)           
3.2.1        Route Studies and Schematic Design
                (Major Roadways)
3.3.1        Route Studies and Schematic Design
               (ComplexHighways)         
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
4.4.1        Major Freeway Interchanges and Direct Connectors
5.1.1        Minor Bridge Design
5.2.1        Major Bridge Design
5.3.1        Multi-Level Interchange Design
5.4.1        Exotic Bridge Design
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
8.2.1        Illumination
8.3.1        Signalization
8.5.1        Highway-Rail Grade Crossings
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
11.1.1       Roadway Construction Management and Inspection
14.3.1       Transportation Foundation Studies