Collier Engineering was founded on the principle of providing clients with the expertise needed to guide them through the challenges of land development, site planning, and transportation projects. This expertise began with the field of Civil Engineering and expanded to include associated disciplines that allow us to provide holistic solutions to our client’s goals and objectives. Today, civil engineering remains the backbone of our company and ensures that the solutions presented by our team are structurally sound enough to stand the test of time.

-Chad Collier

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Roadway Design

Projects range from roadway relocations and widenings to bridge replacement projects and intersection modifications. We use the latest technology in computer-aided design from the initial development of a project to the final construction prints. Our vast amount of experience working on roadway projects for a variety of clients enables us to provide highly accurate estimates of construction costs and anticipate potential issues during the planning phases.

Survey & Site Planning

Collier provides professional registered land surveying services for the creation of legal descriptions, boundary survey documentation, flood-plain survey documentation, etc. We perform topographic/location surveys and construction staking using state-of-the-art equipment and the most up-to-date techniques to obtain results efficiently and accurately.

Streetscape & Pedestrian Enhancements

Streetscape enhancement projects improve the aesthetic and environmental value of a roadway or intersection, and the designs often increase multimodal access, allow for safer pedestrian usage, or permit special use of a roadway or street. Our engineers work hand-in-hand with our landscape architects to provide “Complete Street” solutions that meet the needs and challenges of multi-modal transportation, stormwater runoff, and water quality improvement, and provide cultural and aesthetic spaces that enhance the quality and value of the area.

Bridge Design & Structural Engineering

Collier provides services in the area of bridge design for new facilities, as well as upgrades and repairs to existing bridges, box culverts, and concrete retaining walls. Our engineers are well-versed in the design of various bridge types and are able to help our clients find solutions that meet their individual goals and budgets. In addition to roadway bridges, we are also skilled in designing pedestrian bridges and boardwalks for park and greenway projects.  We have completed numerous locally-funded projects, as well as those funded by the TDOT Bridge Grant, the Federal Aid BRZ Program, and FEMA disaster relief funds for many of our municipal and county clients.

Stormwater Management

Collier has expertise in traditional and low impact design (LID) approaches to stormwater management. We combine the depth and breadth of our real-world experiences with the latest technology to analyze and design stormwater-related projects to meet our client’s objectives while sufficiently addressing jurisdictional requirements. At Collier Engineering, we help our clients develop effective and efficient methods of managing stormwater for site-specific issues, regional sustainable master plans, etc.

Hydraulic Analysis

On any project involving stream crossings, hydraulic analysis is performed using HEC-RAS, the hydraulics software designed for the U.S. Army Corps of Engineers. It allows us to acquire precise water surface profiles and prevent any adverse impacts to surrounding properties. We also use other computer software for hydraulic and drainage calculations such as HY-8 and HydroCAD.


Our company prepares permit applications whenever necessary on projects for submission to the Tennessee Department of Environment and Conservation, U.S. Army Corps of Engineers, and/or Tennessee Valley Authority. Permits include ARAPs, 401 Water Quality Certification, Notice of Intent (NOI), TVA 26(a) and Storm Water Pollution Prevention Plans (SWPPP), and locally issued approvals such as grading permits and local codes coordination.

Grant Applications

We have worked closely with multiple agencies to write and manage grants for our clients and provide funding for numerous projects. Collier staff may also be able to help your organization locate and respond to grant opportunities that could help defray the costs associated with the adoption of GIS technologies, the development of multi-modal transportation options, streetscape enhancements, etc.

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