TxDOT Pre-Certification
Pre-certified Information
Employee Pre-certfication Information:
Rachel R. Hayden, P.E. 
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to download
James E. Allen, P.E. click
to download
Tammy Hoelscher, P.E. click
to download
Firm Pre-certificiation Information:
Firm Name: Hayden Consultants, Incorporated click
to download
Firm Sequence Number: 1940
| Category No. | Category Description |
|---|---|
| 1.4.1 | Land Planning/Engineering |
| 1.6.1 | Major Investment Studies |
| 3.1.1 | Route Studies & Schematic Design (Minor Roadways) |
| 3.2.1 | Route Studies & Schematic Design (Major Roadways) |
| 3.4.1 | Minor Bridge Layouts |
| 3.5.1 | Major Bridge layouts |
| 4.1.1 | Minor Roadway Design |
| 4.2.1 | Major Roadway Design |
| 4.3.1 | Complex Highway Design |
| 7.1.1 | Traffic Engineering Studies |
| 7.2.1 | Highway-Rail Grade Crossing Studies |
| 8.1.1 | Signing, Pavement Marking and Channelization |
| 8.3.1 | Signalization |
| 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 |
| 10.5.1 | Bridge Scour Evaluations and Analysis |