Surveying
- Control surveys
- Topographic surveys
- Construction layout
- Boundary and cadastral surveys
- Route surveys
- Hydraulic and hydrographic surveys
- Environmental/hazardous surveys
- 3-D modeling
- GIS data collection/mapping
- GPS surveys
- Subsurface utility engineering (SUE) services
Traffic studies/signal design | Storm/sanitary sewer design
Surveying 
EDSI has a comprehensive surveying team with four survey crews using the most advanced equipment available. Crews are formed for your project based on the consideration of your specific needs.
We have a full accompaniment of CAD technicians back at our office to expertly and efficiently process the work of our crews. Our offices can provide survey data and final maps in a variety of digital formats, including AutoCAD and MicroStation.
EDSI surveys according to National Geodetic Survey (NGS) standards to ensure reliability for large control surveys. All boundary surveys are performed to exceed the minimum standards for the states of Illinois and Missouri, the Department of Natural Resources, and the Division of Geology and Land Survey. We can also certify to ALTA standards when required. EDSI is OSHA-certified for all of our environmental and hazardous site surveys.
Missouri Botanical Gardens
Location:
City of St. Louis, Missouri
EDSI was retained as a consultant to complete topographic survey, as-built survey and GPS survey services for various ongoing improvement projects to enhance the gardens and features within the Missouri Botanical Gardens. Our Survey Crews first completed general surveying services to help the facility reestablish horizontal and vertical control. Our team also completed general AutoCAD drafting services for the purpose of updating the existing Missouri Botanical Garden's AutoCAD base-map and included establishing standard AutoCAD layers and standard symbols for the base-map.
EDSI continues to do projects for the Missouri Botanical Gardens to help determine how MBG can achieve LEED goals in building, better utilize resources and more effectively design facilities throughout the park and gardens.
New Mississippi River Bridge Design
Location:
St. Louis, Missouri
EDSI served as a sub-contractor in providing surveying services to design a new bridge between Missouri and Illinois crossing the Mississippi River.
The goal of the Mississippi River Bridge Project is to provide a Mississippi River Crossing that can accommodate at least two 12-foot lanes of traffic in each direction and be expandable, by re-striping, to three 12-foot lanes in each direction. Total length of the bridge will be 6,473 feet with the Missouri approach spanning 1,150 feet and Illinois approach spanning 1,500 feet.
National Levee Database Project
Location:
St. Louis, Missouri
EDSI was retained as a contractor to provide surveying services to assist in establishing a GPS control network and providing control points necessary for field data collection utilizing USACE Standards and Specifications. The site consisted of five hundred and three (503) levee miles within the U.S. Army Corps of Engineers, St. Louis, MO District.
Our surveyors collected attribute data in the field for all levee features, including the following: Closure Structures, Typical Cross Sections, Floodwalls, Encroachments, Existing Drainage, Levee Centerline, Levee Crossings, Relief Structures and Piezometers. The data was collected and processed to create a deliverable that would be compatible with the existing Corps GIS. This data was integral to the development of an overall Levee Database for the District.
Missouri Speed Skating - Rink Layout
Location:
Chesterfield, Missouri
EDSI was selected to perform surveying services in preparation for the US Speed Skating meet held in Chesterfield, MO. Measurements and calculations were prepared in order to correctly layout an Olympic standard speed skating track.
Since hundredths of a second may determine the winner in a speed skating match, it was imperative that every figure be recorded with the utmost accuracy. EDSI collected and analyzed data with great precision to ensure all measurements and calculations were exact.
EDSI worked with the Missouri Speedskating Association to provide a precise track layout to position boundary markers in the ice. Our survey department created a site plat based on exacting specifications from the Association.
Taxiway Victor - Lambert International Airport
Location:
St. Louis, Missouri
EDSI was selected as a consultant to provide topographic survey services for the design associated with the reconstruction of Taxiway Victor at the Lambert St. Louis International Airport.
The project included an area from Taxiway Foxtrot to Runway 6-24.