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.
EHRA was selected by the client to provide engineering design and to serve as District Engineer for the 2,400 acre Towne Lake Development. Our survey department retraced the overall boundary and performed a topographic survey of the site.
Identified as a top priority during the development of the District’s Parks Master Plan, this portion of trail was the first phase of over two miles of planned trails to provide connectivity and recreation for District residents.
The purpose of this project was to convert the existing at-grade crossing of Brazoria County Road 56 (CR 56) and State Highway 288 (SH 288) into a diamond interchange that includes a new overpass bridge and providing access to the newly developed Meridiana Development. Coordination with TXDOT, area landowners, utility companies, and Brazoria County was integral in obtaining approval and acceptance of the project. The main design challenge for this project was to accommodate double intersections on the west side of SH 288 to tie into existing access roads with two-way traffic and a new southbound on-ramp within a close proximity. EHRA coordinated with TxDOT throughout the project from preliminary concepts for the intersection and bridge through final design and construction. Each component of this project was designed in accordance with TxDOT standards and criteria.
Project totaled 640 acres including 1256 Residential Lots. EHRA designed, created construction plans, publicly bid and preformed Construction management.
The rolling hills, mature trees, natural ponds and expansive views are among the characteristics that make Chambers Creek, the 1,265-acre community near Conroe, Texas, unique. And although those same features are what create a unique set of challenges to overcome, for EHRA Engineering's Land Services team, the challenge isn't simply developing the tracts. It's figuring out how to develop it without engineering away what makes the land special in the first place.
Working With the Terrain
Rolling terrain introduces a new level of complexity to nearly every aspect of site development. It becomes a game of balancing dirt, cutting it from one area and using it in another to help manage costs and utilize every bit of land and resources with intention.
But grading for efficiency isn't enough. Cutting into a hillside can require expensive retaining walls, but leaving too much elevation can create challenges for lots, roads and drainage. EHRA established a strict grading criteria that balanced slope, constructability and livability while minimizing the number and height of retaining walls. Within those constraints, one viable solution was the use of grade beams to thicken the home’s foundation and repurpose elevation that otherwise would be used on a retaining wall. Combined with a dropped slope, the approach in some instances eliminated the need for a large wall altogether.
The trade-off included incorporating steps into backyards, which was an important consideration for a 55+ active adult community. That's why the team’s solutions continue to be evaluated not just for whether they work, but for their impact on residents, aesthetics and cost. Our goal is to find the solutions that work best for the vision of the community.
Where Engineering Meets Aesthetics
When it comes to drainage, engineers naturally look for the most efficient way to move water from Point A to Point B. At Chambers Creek, however, the most efficient drainage solution isn't always the best overall solution.
Throughout the development, EHRA has worked with landscape architects to integrate necessary drainage features into the surrounding environment. Boulders, vegetation and other landscape elements have strategically been incorporated to make drainage features feel natural rather than engineered. It's a small example of the larger principle that a solution has to function, but it also has to belong.
Every Phase Is a New Puzzle
As Chambers Creek continues to develop, each phase brings a different set of conditions. Phase Three presented a large ridge that needed reduction, yet it was surrounded by constraints on both the eastern and western sides. The team had to manipulate the dirt carefully, moving it within the development while accommodating those constraints.
Phase Four has presented an entirely different challenge, with a significant number of internal trees, detention ponds and pipeline corridors. Each phase is essentially its own puzzle, but as engineers, the pieces still have to connect and make up the larger community as a whole.
Before beginning each section, EHRA has worked with Caldwell Companies to identify priorities and evaluate how preservation affects the land plan. Sometimes the impact is minimal. Other times, preservation can mean changing the plan or potentially losing lots. Through it all, public safety remains the non-negotiable priority.
Preserving the natural character of Chambers Creek isn't about working around the land, but rather allowing the land to help shape its design. Engineering isn't intended to overpower the land. It's intended to work within it.
Nothing Happens by Accident
For someone visiting Chambers Creek, the community simply feels natural. A home sits at the right elevation. A roadway follows the terrain. Trees remain in yards. Water moves through a beautiful drainage feature. A view opens toward the golf course, and it looks almost effortless.
But that sense of effortlessness is the result of countless decisions by Caldwell Companies and an entire team of project partners.
As development continues, each new section brings another set of constraints, decisions and opportunities. The team will solve each new puzzle with designs that don't simply work, but work together to balance the land, residents and the needs of the community, and that achieve what Chambers Creek was always envisioned to be.
