Roadway | Drainage | Traffic Control | Municipal Infrastructure

Civil engineering with senior level judgment and hands-on design.

J. Diaz Engineering LLC is a Lakeland-based civil engineering practice providing principal-led roadway and drainage engineering, Civil 3D design and training, construction plans, and project support for municipal infrastructure.

Principal Led • Practical • Responsive

About

A small practice built around direct senior-level involvement.

The practice is intentionally small and flexible, allowing the principal engineer to remain directly involved in design while collaborating with specialized subconsultants as needed. Roadway geometry and drainage are developed together, with a focus on practical design, clear communication, and constructible solutions.


21+

Years of Experience


39742

FL Engineering Business

Services

Focused civil engineering support for municipal and consultant teams.

Prime or subconsultant support for municipal roadway and drainage assignments.

  • Horizontal and vertical geometric design

  • Widening, reconstruction and rehabilitation

  • Intersections, access roads, sidewalks and shared-use paths

  • Typical sections, grading, cross sections and pavement design

  • Temporary Traffic Control / MOT plans development

  • Roadway and municipal project support

  • Plan production integrated with roadway design

  • Storm sewer systems, inlets and gutter-spread analysis

  • Culverts, cross drains, and roadside ditches

  • Pond sizing, attenuation, treatment and floodplain compensation

  • Nutrient-loading analysis

  • Alignments, profiles, assemblies and corridor modeling

  • Pipe networks, grading and plan production

  • Customized training for individuals and design teams

  • Project-based coaching and workflow troubleshooting

  • Sidewalk and shared-use path improvements

  • Local road and access-road assignments

  • Roadside drainage and stormwater improvements

  • Constructible solutions for constrained corridors

  • Prime consultant or subconsultant delivery

  • Scope, fee, schedule and subconsultant coordination

  • QA/QC, peer review and senior technical troubleshooting

  • Estimates, specifications support and permitting coordination

Approach

Senior engineering involvement stays close to the work.

Delivery Model

Contact

Let's discuss your project.

J Diaz Engineering LLC
Josue G. Diaz, PE
863-617-6490 | Lakeland, Florida

Florida Engineering Business Registry No. 39742

© 2026 J. Diaz Engineering, LLC
Florida Engineering Business 39742