OUR PORTFOLIO
Civil Engineering Portfolio | CSI Project Experience
Since 1989, CSI has delivered successful civil engineering projects across Florida and Georgia. Our portfolio reflects a consistent record of quality, precision, and client partnership — spanning roadway, bridge, structural, and site development work for public and private sector clients.
From complex bridge design and rehabilitation to large-scale transportation infrastructure and civil site development, CSI's project experience speaks for itself.
Our Civil Engineering Capabilities at Work
CSI's portfolio spans the full range of our multidisciplinary services:
Roadway Design — reconstruction, widening, safety, and RRR projects
Bridge Design — major and minor bridges, rehabilitation, and replacement
Structural Engineering — bridges, buildings, foundations, dams, and drainage structures
Value Engineering — cost optimization across project types
Civil Site Design — site development, stormwater, ADA upgrades
CEI
Our clients include the Florida Department of Transportation (FDOT), Georgia Department of Transportation (GDOT), Jacksonville Transportation Authority (JTA), City of Jacksonville, City of Augusta, Jacksonville Port Authority, and a wide range of county and municipal agencies.
Trusted by Public Agencies Across the Southeast
CSI's civil engineering consulting team has built lasting relationships with federal, state, county, and city agencies throughout Florida and Georgia. Our professionals bring pre-qualified credentials, proven processes, and the latest technologies to every project — delivering results that hold up over time.
SR 100 Rails to Trails
SR 100 Rails to Trails – Putnum County, FL
Florida Department of Transportation, District 2
CSI provided design services for the SR 100 Rails to Trails project in Putnam County. The project included the design of a 291-foot-long pedestrian bridge to be constructed in place of an existing railroad trestle bridge. The bridge consisted of 3 97-foot spans. The bridge was a pre-engineered truss. CSI provided design criteria and substructure design.
CSI also provided the design of a concrete box culvert replacement to replace the existing structurally deficient pipe culvert. Services included bridge design, trail design, bridge hydraulics, cost estimates, and environmental permitting.
Alta Drive / Yellow Bluff Road Bridge
Alta Drive / Yellow Bluff Road Bridge – Jacksonville, FL
450' Bridge Connection with Roadway & Drainage Improvements | City of Jacksonville
This project delivered the design of a 450-foot bridge connecting Alta Drive and Yellow Bluff Road in the City of Jacksonville, Florida — a key infrastructure link supported by comprehensive roadway and drainage improvements, along with extensive environmental permitting coordination.
St. Augustine Road Bridge
St. Augustine Road Bridge Over Julington Creek – Jacksonville, FL
104' Continuous Slab Bridge Replacement | City of Jacksonville
This project delivered the design of a new 104-foot continuous slab bridge to replace the existing structure carrying St. Augustine Road over Julington Creek in the City of Jacksonville, Florida — combining structural innovation with extensive multi-agency environmental coordination.
CR 309D Bridge
CR 309D Bridge Replacement Over Etonia Creek – Putnam County, FL
Decorative Brick-Paved Bridge with Timber Railing | FDOT/AASHTO Compliant Design
This single-span bridge project combines structural performance with aesthetic detail, featuring a brick paver wearing surface and timber railing designed to meet modern safety standards while preserving a classic, traditional look.
Princess Island House Bridge
Princess Island House Bridge – Single-Span Bridge Replacement | Flagler County, FL
Decorative Brick-Paved Bridge with Timber Railing | FDOT/AASHTO Compliant Design
This single-span bridge project combines structural performance with aesthetic detail, featuring a brick paver wearing surface and timber railing designed to meet modern safety standards while preserving a classic, traditional look.
County Road 200A
Bridge No. 740069 Replacement — County Road 200A over Lofton Creek Yulee, Nassau County, Florida
CSI was selected to provide Project Development & Engineering (PD&E) and design services for the replacement of the structurally deficient Bridge No. 740069 on County Road 200A (Paige Dairy Road) over Lofton Creek in Yulee, Nassau County, Florida.
Award Winning SR 228 Alt (Emerson Street Expressway) & SR 126
SR 228 Alt (Emerson Street Expressway) & SR 126 Extension Concrete Rehabilitation | Jacksonville, Florida
This project was honored with Florida's Best in Construction — Community Awareness Award (2025) by the Florida Transportation Builders' Association (FTBA) — a statewide recognition awarded to projects demonstrating exceptional construction quality, public communication, and community impact during transportation infrastructure delivery.
FEATURED CASE STUDY
Duval County Courthouse
Civil & Roadway Design | Jacksonville, FL
CSI served as a key design-build team member for the 800,000 SF Duval County Courthouse in downtown Jacksonville, Florida — one of the most complex civic infrastructure projects in the region.
CSI's scope included civil site design, roadway design, and stormwater drainage, highlighted by the full realignment of Monroe Street to accommodate the courthouse entrance. Utility design encompassed potable water distribution and sanitary sewer collection systems, with permitting coordinated across multiple agencies including the City of Jacksonville, Jacksonville Electric Authority (JEA), and the Environmental Protection Agency (EPA).
A core engineering challenge was maximizing the use of existing in-place structures to minimize costs — requiring extensive coordination across all design disciplines throughout the project lifecycle.
