Cypress Environment & Infrastructure designs sites, roads, drainage systems, floodplain projects and waterfronts for public agencies and private clients on the Gulf Coast. We work from offices in Biloxi, Mobile and Pensacola and are licensed in Mississippi, Alabama, Louisiana, Florida and Georgia.

Our civil engineers work alongside our environmental scientists. Wetland limits, flood zones and permit conditions are built into the design from the first layout, so the drawings and the permits match.

Drone view along a low two-lane bridge over a winding coastal river, with fender dolphins at the channel span — Cedar Lake Bridge over the Tchoutacabouffa River, Biloxi, Mississippi (City of Biloxi). Cypress studied the bridge replacement.

What We Design

Site and land development

Site layout, grading and drainage plans
Site utilities, including water and sewer service
Parking and hardscape
Erosion and sediment control plans and construction SWPPPs
Construction plans and specifications
Existing-conditions base maps from survey, GIS and drone aerial mapping

Rendering of a community courtyard with raised garden planters, benches and shade trees between brick buildings — Community courtyard concept for a private client.

Roads and transportation

Roadway realignment and redesign
Roadway drainage, ditches and culverts
Bridge replacement studies
Traffic studies for intersections and interchanges

Stormwater and drainage

Hydrology and hydraulics for site and corridor drainage
Detention, conveyance and water quality design to local and MS4 criteria
Green infrastructure: bioswales, rain gardens, constructed wetlands and stormwater parks
NPDES construction stormwater permit coverage

Pond dam, coir sediment wattles and new wetland plantings at a constructed stormwater wetland under construction — Constructed stormwater wetland during construction.

Floodplains and water resources

Design in FEMA flood zones, including elevation, fill and compensatory storage
No-rise and flood impact analysis with hydrologic and hydraulic models
Riverine work: crossings, bank stabilization and floodplain restoration
Raising flood-prone roads and the drainage that serves them

Floodwater covering a two-lane road through a forested river floodplain, with a boat on the water — Cedar Lake Road under floodwater in the Tchoutacabouffa River floodplain (City of Biloxi study area).

Coastal and waterfront

Piers, docks, boardwalks and marshwalks
Bulkheads, revetments and living shorelines
Layouts that avoid seagrass and keep waterways open

Engineering plan sheet showing a zigzag pier layout across a marsh and bayou, with a platform at each turn, segment dimensions and construction notes — Pier layout sheet from the Shepard State Park marshwalk drawings (City of Gautier).

Parks and public spaces

Park, trail and public access concepts
Waterfront park redesigns
Stormwater parks that also serve as public space

How a Design Project Runs

Scoping: flood maps, soils, wetland indicators, outfall conditions and the local criteria that will apply
Field data: survey, wetland delineation and drone mapping where the site needs it
Concepts and alternatives: layouts compared on cost, flooding, wetland impacts and permits
Design and permits together: construction drawings prepared alongside Section 404/401, coastal, NPDES and local permits
Construction: construction administration and construction engineering and inspection (CE&I) on our designs and on projects designed by others, across the Southeast

New highway corridor under construction, with graded lanes, silt fence and riprap along the edges and an overpass in the distance — SR 57 highway construction in Mississippi (MDOT). Cypress provided stormwater CE&I.

Selected Projects

Cedar Lake Road bridge and flooding study, City of Biloxi. A FEMA-funded resilience study, closed out in 2025. It recommended a replacement bridge next to the existing one, raising a section of Cedar Lake Road, and traffic improvements, based on bridge, floodplain and I-10 interchange traffic analysis.
East Pier Roadway, Port of Gulfport (Mississippi State Port Authority). Road realignment for container truck traffic on a former brownfield, with a stormwater park and rain gardens.
West Pier commercial harbor planning, Port of Gulfport (Mississippi State Port Authority). Concepts for a living shoreline and a harbor boardwalk.
Shepard State Park marshwalk pier, City of Gautier. Design, permits and CE&I for a 1,100-foot pier over marsh and Lamotte Bayou, laid out to avoid seagrass and keep the bayou open to kayaks. 2021 ASCE Mississippi Small Project of the Year and ENR Regional Best Projects.
Perch Creek parks, City of Mobile. Concept design and master planning for three waterfront parks, with conceptual engineering, coastal flooding analysis and wetland mapping.
Community redevelopment, private client, Hattiesburg, Mississippi. Site concept for a courtyard with garden planters, seating and shade trees.
Round Island, Mississippi Department of Environmental Quality (MDEQ). Topographic and bathymetric surveys and CE&I for tidal channels across a restored marsh.
SR 57, I-10 to Vancleave, Mississippi Department of Transportation (MDOT). Stormwater CE&I on new highway lanes, bridges and stream crossings.

See all projects.

Who We Work For

State agencies
Municipal agencies (cities and counties)
Federal agencies
Private clients and developers
Nonprofits
Educational institutions
Other design firms

Related Services

Offices

Biloxi, Mississippi (headquarters): 772 Howard Avenue
Mobile, Alabama: 150 Government Street, Suite 950-1000
Pensacola, Florida: 13 Palafox Place

Licensed in Mississippi, Alabama, Louisiana, Florida and Georgia. See office locations.

Talk to Us About a Design Project

Send the site location or parcel, what you plan to build, any survey or prior studies, and your schedule. We will tell you what the design and permits will take.

Call: 228-596-1580

Or use our contact form.

Civil Engineering Design Services