OUR SERVICES

TRANSPORTATION DRAINAGE

HHR specializes in drainage engineering consulting for transportation projects in the states of Texas, Georgia, North Carolina and Alabama…


FLOODPLAIN ENGINEERING

HHR has experience with various issues related to floodplain management. Our floodplain engineering projects vary in size from simple BFE determinations…


PUBLIC WORKS ENGINEERING

HHR has extensive experience in well permitting, new community water systems, state permitting for water extensions…


LAND DEVELOPMENT

HHR’s land development expertise includes site planning/feasibility studies, stormwater management, roadway design, and erosion…


WE DO MORE THAN JUST ENGINEERING

As leaders in our profession, HHR provides ongoing instructor and training courses in the fields of hydrology, hydraulics, and erosion control.  Our principals and employees have been involved in the development of drainage standards, policies, and procedures for local and state governments, and are dedicated to uphold a standard of excellence in water resources engineering.

Company Certifications and State Specific Pre Certificiations

HHR Certifications


  • Small Business – Small Business Administration, US Government
    • Harris County Flood Control District
  • State of Texas
  • Texas Department of Transportation
  • North Carolina Department of Transportation
  • Georgia Department of Transportation

TxDOT Pre-Certification Categories


1.4.1
Land Planning/Engineering

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

4.4.1
Major Freeway Interchanges and Direct Connectors

7.1.1
Traffic Engineering Studies

8.1.1
Signing, Pavement Marking and Channelization

8.2.1
Illumination

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 Evaluations and Analysis

Georgia DOT Pre-Qualification Information


3.12
Highway Design Roadway: Hydraulic & Hydrological Studies (Roadway)

4.04
Highway Structures: Hydraulic & Hydrological Studies (Bridges)
4.05
Bridge Inspection
9.01
Erosion, Sedimentation, and Pollution Control and Comprehensive Monitoring Program

North Carolina DOT Pre-Qualification Information


00070
Erosion and Sediment Control Design, Roadside Environmental – Soil & Water, Roadside Environmental – Soil

00433
Hydraulic Design – Tier I, Hydraulics, Highway Design Branch

00434
Hydraulic Design – Tier II, Hydraulics, Highway Design Branch

Alabama DOT Pre-Qualification Information


Roadway Bridge and Railway Bridge Design

Hydrological Studies and Drainage Design