Cypress Environment & Infrastructure is a civil engineering and environmental consulting firm on the Gulf Coast. We design, inspect and permit public and private projects from offices in Biloxi, Mobile and Pensacola, and we are licensed in Mississippi, Alabama, Louisiana, Florida and Georgia.
Much of our work is centered on civil engineering design. Our environmental scientists work on the same projects, so wetland lines, permit conditions and design drawings come from one team.
Civil Engineering
Civil engineering design
- Site grading, drainage and layout
- Roadway, parking and hardscape design
- Construction plans and specifications
- Floodplain analysis and design for FEMA flood zones
Construction engineering and inspection (CE&I)
- CE&I on our designs and on projects designed by others, across the Southeast
- Daily inspection and reports, pay quantities and pay estimates
- Materials testing through partner laboratories
- Stormwater, erosion control and environmental permit compliance during construction
- As-built surveys and closeout
- For state DOTs, cities, counties, ports, state agencies and private owners
Coastal engineering
- Piers, docks and marshwalks
- Bulkheads, revetments and living shorelines
- Dredging and fill design
- Section 404, Section 10 and coastal permits prepared with the design
Stormwater management
- Hydrology and hydraulics for site and corridor drainage
- Detention, conveyance and water quality design
- Construction SWPPPs, BMPs and NPDES permit coverage
- Local post-construction stormwater requirements in Mississippi, Alabama and Florida
Green infrastructure
- Bioswales, rain gardens and constructed wetlands
- Stormwater parks that also serve as public space
- Native plantings that treat runoff
Water resources engineering and modeling
- Hydrologic and hydraulic models (HEC-HMS, HEC-RAS)
- Hydrodynamic and water quality models of bays and estuaries
- No-rise and flood impact analysis for floodplain permits
- Riverine and flood protection design
Planning and watershed management plans
- Site, park and master planning
- Watershed plans that end in a ranked list of fundable projects
- Restoration planning
- NEPA documents and support for federal actions
- GIS and drone mapping for site and watershed plans
Environmental Consulting
Environmental work is often where a project starts: a delineation before a land purchase, or a permit before design is final.
Wetland delineation
- Delineations to the 1987 Corps manual and the regional supplement
- Jurisdictional determinations (JDs)
- Boundaries mapped with high-accuracy GPS, with drone aerial mapping where it helps
- State detail: Mississippi, Alabama, Louisiana
Environmental permitting
- Section 404 and Section 10 permits, including nationwide permits
- Section 401 water quality certification and state coastal permits
- Mobile, Vicksburg, New Orleans and Jacksonville Districts of the U.S. Army Corps of Engineers
- Threatened and endangered species, gopher tortoise, SAV and shellfish surveys
Mitigation banking and compensatory mitigation
- Bank prospectus and mitigation banking instrument (MBI)
- Baseline assessments, monitoring and credit release
- Credit calculations and permittee-responsible mitigation plans
Ecosystem restoration
- Marsh, stream and floodplain restoration design
- Living shoreline and marsh restoration
- Monitoring and performance metrics
Phase I and II ESAs and remediation
- Phase I and Phase II environmental site assessments
- Remediation planning and cleanup design
NPDES stormwater compliance inspections
- Routine and rain-event inspections of construction sites under state stormwater permits
- Led by a Certified Professional in Erosion and Sediment Control (CPESC)
- Reports with photo logs and corrective-action lists
Who We Work For
- State agencies
- Municipal agencies (cities and counties)
- Federal agencies
- Private clients and developers
- Nonprofits
- Educational institutions
- Other design firms
Selected Projects
- SR 57, I-10 to Vancleave, Mississippi Department of Transportation (MDOT). Stormwater CE&I on new highway lanes, bridges and stream crossings.
- Round Island, Mississippi Department of Environmental Quality (MDEQ). Topographic and bathymetric surveys and CE&I for tidal channels across a restored marsh.
- Shepard State Park marshwalk pier, City of Gautier. Design, permits and CE&I. 2021 ASCE Mississippi Small Project of the Year and ENR Regional Best Projects.
- East Pier Roadway, Port of Gulfport. Road realignment for container truck traffic, with a stormwater park and rain gardens.
- Cedar Lake Road bridge and flooding study, City of Biloxi. Bridge replacement, floodplain and traffic study, closed out in 2025.
- Back Bay of Biloxi modeling, MDEQ. Hydrodynamic and water quality models of the bay and its tributaries.
- Bayou Auguste restoration, Biloxi. Tidal stream and floodplain restoration. 2015 USEPA Gulf Guardian Award, 1st Place.
- Texas Flat and Lower Devil’s Swamp mitigation banks. Prospectus and MBI for 1,985-acre and 330-acre banks, approved by the Mobile District in 2013.
See all projects.
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 Project
Send the project location, what you plan to build, inspect or permit, and your schedule. We will tell you what it takes and who on our team will work on it.
Call: 228-596-1580
Or use our contact form.