Moving Communities Forward
IMS Engineers is a full-service consulting, engineering, management, and operations practice founded in 1996 by John D. Calhoun, Ph.D. and Rod L. Hill, P.E. It serves public and private clients to improve the environment and public infrastructure, delivering solutions across planning, civil, environmental, transportation, structural, water resources, and water and wastewater engineering, as well as program and construction management. The practice assists clients ranging from local businesses to international government agencies on projects such as water purification plant expansions, toll road extensions, and airport utilities planning.
John D. Calhoun, Ph.D.CEO and Co-Founder
Rod L. Hill, P.E.COO and Co-Founder
Tommy J. Avant, P.E.Corporate Vice President
Derrick CannonVice President of Operations
Devin JonesDirector of Business Development
The practice provides end-to-end transportation engineering and planning, delivering roadway designs, bridge layouts, and advanced traffic control solutions.
Conducting alignments, schematic layouts, and route evaluations for minor and complex highways.
Engineering minor roadways, complex highway corridors, and multi-level freeway interchanges.
Developing structural designs for minor, major, multi-level interchange, and complex bridge structures.
Designing traffic signals, optimizing timings, analyzing traffic patterns, and implementing signing, pavement marking, and channelization.
Comprehensive engineering for water resources, treatment systems, and public utility infrastructure.
Conducting hydrologic studies, designing pump stations, and delivering roadway hydraulic engineering.
Designing and managing wastewater collection, pumping, treatment, and flood protection systems.
Engineering large-diameter waterlines, water purification facilities, and transmission networks.
Environmental compliance, habitat protection, and site assessment services to support infrastructure development.
Assisting with Clean Water Act Section 404 permits and regulatory compliance.
Conducting ecological assessments and habitat determinations for protected species.
Performing initial site assessments for hazardous materials on proposed project sites.
Professional construction phase services ensuring compliance, quality control, and schedule adherence for infrastructure projects.
Providing on-site management, quality assurance, and engineering inspection for highway and bridge construction.
Delivering schedule coordination, cost evaluation, and technical oversight throughout the project lifecycle.
Initial planning, master studies, and feasibility analysis for land development and public works.
Evaluating site conditions and planning land usage for residential, commercial, or public infrastructure.
Performing technical and economic assessments to verify viability prior to design.
Analysis and design services for buildings, flood defense systems, and public works.
Government · Federal · Aviation · Airports · Highways & Roads · Water Supply · Wastewater · Stormwater & Flood Control
Ethiopia
A design and build road upgrading project that improves connectivity between Gambela and Oromia Regional states, forming part of the Addis Ababa - Nekemte - Dembidolo - Gambela - South Sudan Road.
New Orleans, LA
Utilities master planning and design services for long-term airport development.
Houston, TX · Client: City of Houston
Design engineering services supporting the Houston Waterworks Team (HWT) to expand the existing water purification plant capacity by 320 million gallons per day (MGD).
Fort Bend County, TX · Client: Fort Bend County Toll Road Authority
Design engineering services supporting the Fort Bend County Toll Road Authority program manager with the Segment B-2 Extension to the existing toll road system.