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713.784.4500

Cane Island Parkway

The new roadway design comprises of one-half major thoroughfare, conventional drainage, a 600-ft long bridge over Willow Fork Bayou, Retaining walls and intersection improvements at FM 1463 (including traffic signals and illumination).

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Northpark Drive Mobility Project

EHRA completed preliminary engineering, phase one environmental site assessment and schematic development for the widening of Northpark Dr. between US 59 and Woodland Hills Dr. EHRA also provided program management, drainage analysis and design, traffic engineering, environmental documentation and schematic design for the roadway, as well as grade separation at the Loop 494/UPRR railroad crossing. 

EHRA conducted traffic operations and access management studies for the Northpark Dr. corridor. This corridor is approximately 2.2 miles long and has major signalized and unsignalized intersections and driveways that access various subdivisions and industrial developments. These studies laid the groundwork for the widening of Northpark Dr. from a four-lane boulevard cross-section to a six-lane boulevard complete street. The new street design includes low impact development drainage, conventional drainage, a grade separation at the UPRR crossing with mechanically stabilized earth retaining walls, two at-grade crossings for bi-directional frontage access, reconstruction of two concrete bridges over a diversion channel, intersection improvements, a roadway-adjacent multiuse path and traffic signal improvements. 

Drainage analysis and design included hydrologic and hydraulic studies of both existing and proposed conditions to demonstrate that proposed project components would not adversely affect the 100-year floodplain in the area. The roadway and traffic designs contained horizontal and vertical alignments, cross-sections, plan and profile, sidewalk and bicycle accommodations, intersection layouts, traffic control plans and signing and pavement markings.  

As the program management firm, EHRA coordinated with TxDOT, UPRR, the City of Houston Council District E, COH Planning and Development Department, COH Public Works and Engineering Department, Montgomery County, Harris County, HCFCD and area residents throughout the project.

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Harris County MUD No. 536 Wastewater Treatment Plant & On-Site Lift Station Expansion

The facility features an activated sludge process system. Additionally, the facility is equipped with an emergency standby diesel generator.

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Houston Community College Campus Expansion

EHRA was selected as one of two firms to provide professional surveying services under contract to Houston Community College System.

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League Line

EHRA performed preliminary drainage area delineations for nine creek crossings and calculated approximate 100-year flows for each culvert crossing.  Culvert structures were sized for each of the six crossings, ranging from 48” round pipe culverts up to dual 5’x5’ box culverts.

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713.784.4500

North Canal Diversion HCFCD Project

This ongoing project involves surveying for property acquisition and engineering design surveys to re-route Buffalo Bayou north of downtown Houston.

North-Canal-Diversion-Survey_1
Project Overview

Engineering Design and Surveying

This project involves ongoing surveying for property acquisition and engineering design surveys to re-route Buffalo Bayou north of downtown Houston, between North Main Street and McKee Street. Services to be provided include “soundings” for Buffalo and White Oak Bayous. Boundary determinations of property owner tracts for complete or partial purchase by Harris County, complete topographic surveys of the 20+ acre site area, collection of utility information, right-of-way information, cross sections of bayous and design option areas to assist design team in preparation of Preliminary Engineering Report and final design.

North Canal Diversion
This project will facilitate the growth and improvement of Houston. 
Project Details
Surveying and Mapping

SEE EHRA’S LATEST NEWS

22 Dec 2022

Project InFocus: Katy ISD Outdoor Learning Center

EHRA was contracted to support the renovation and expansion of the Katy Independent School District (Katy ISD) Welch Outdoor Learning...
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21 Dec 2022

Leave it better than you found it

As the eldest of seven kids in a first-generation Mexican American family, responsibility and initiative are two characteristics that were...
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22 Nov 2022

Project InFocus: HCMUD 536 WWTP Phase 3 Expansion

The existing Harris County Municipal Utility District 536 (HCMUD 536) wastewater treatment plant (WWTP) required expansion to accommodate...
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