A variety of surveying services are often required throughout the duration of a project starting with the land acquisition or existing condition survey and ending with Record Drawings which provides as-constructed condition information. BLA has provided surveying services since shortly after opening its doors for business. Today, BLA uses the latest technology in GPS satellite systems, robotic total stations, and digital levels to provide clients with professional, cost-effective and reliable surveying services including the following:
- Original Boundary and Boundary Retracements
- Residential and Commercial Subdivisions
- ALTA/ACSM Minimum Standard Land Title Surveys
- Topographic Surveys
- Horizontal and Vertical Control Networks
- United States Public Land Survey Corner Perpetuation
- Ground Control for Aerial Photogrammetric Mapping
- FEMA Elevation Certificates
- FEMA Letter of Map Revisions and Amendments
- Construction Layout and Verification
- Mine Subsidence Monitoring
- Low Distortion Map Projection Development
- Model Development for Machine Control
*Please Note- Survey services in Illinois are provided by Illinois registered professional surveyors located in the firm’s Evansville, Indiana office.
- Highway & Bridge Location Surveys
- US 41 Added Travel Lanes & Reconstruction, Vanderburgh County, Indiana
Client: Indiana Department of Transportation (INDOT)
This 7.6-mile section of roadway consisted of two lanes originally constructed in 1924 with an additional two lanes constructed in 1941 and 1947. The purpose of the project was to provide all the required topographic survey and section property corner ties to enable the design and right-of-way acquisition along the section that functioned as an arterial and was classified as urban-other principal arterial. The proposed improvements were required to satisfy contemporary design standards, replace pavement where deteriorating conditions existed, and improve the level of service throughout the corridor.
The project consisted of a full ground survey along a section starting at the US 41/State Road 66 (Diamond Avenue) interchange and running to a point north of its intersection with Boonville-New Harmony Road. In addition to the mainline, 4.8 miles of S-line were also run along 14 different S-lines, as well as detailed surveys of nine bridges along the route. The project schedule required the use of multiple survey crews throughout the duration of the project.
- I-465 Interchange Reconstruction, Indianapolis, Indiana
Client: Indiana Department of Transportation
The I-465 interchange reconstruction project involved the route location survey required for the reconfiguration of a complex collector distributor interchange on the east side of Indianapolis. The survey was accomplished using a combination of low altitude aerial photogrammetric mapping and supplemental ground survey using conventional electronic data collection and real-time kinematic survey techniques. The overall project consisted of 3.17 miles of mainline along with five S-Lines totaling 2.76 miles in length. In addition, supplemental survey data was collected on the 10 bridge structures that were either replaced or rehabilitated. The project schedule required the use of multiple survey crews which in turn required a significant amount of coordination between crews so that all required information was collected and all data was collected in a consistent manner. The project was successfully completed by assigning an overall project manager as well as a lead survey party chief who assigned the various survey tasks on a daily basis.
- I-69 Tier 1 Evansville to Indianapolis, Indiana
Client: Indiana Department of Transportaton
The I-69 Evansville to Indianapolis corridor study developed a preferred corridor for the existing interstate I-69 to be extended south from Indianapolis to the southwest corner of the state. The environmental process required by the Federal Highway Administration was developed in a two-tier process. The first tier of the process established a corridor, generally 2,000 feet in width, along a 142-mile route. As part of the second tier of the environmental process, new controlled aerial photography of the entire 2,000-foot-wide corridor was obtained. Coordinating with an aerial mapping consultant and the Indiana Department of Transportation’s aerial mapping department, BLA placed and established horizontal and vertical positions on approximately 270 aerial panel points. In addition, approximately 100 primary control points were constructed along the route to be used during the second tier of the environmental as well as during the future design phase. The horizontal positions of the primary control were established using multiple observations using rapid-static GPS methods. Vertical positions were established by differential leveling using First Order digital levels with certified invar rods. Panel positions were established by multiple observations using real-time kinematic survey techniques along with differential leveling. Over 250 miles of differential leveling was performed.
Pipeline/Utility Location Surveys
- BP Pipeline, Indiana & Tennessee
Client: BP Pipeline
Performed pipeline surveys throughout Indiana and Tennessee.
- Duke Energy, Wheatland, Indiana
Client: Duke Energy
Performed GPS RTK Gas pipeline location survey.
- AK Steel, Indiana
Client: AK Steel
Performed GPS RTK and construction layout survey of 3 miles of pipeline.