US 75 LiDAR Survey and SL-12

Client:
Texas Department of Transportation (TxDOT)
Location:
Allen and Dallas, TX
Date:
2019

1519 Surveying, LLC (1519) completed two simultaneous projects under one work authorization for the Texas Department of Transportation (TxDOT): 1) The US 75 Project in Allen was completed for the purpose of a bridge replacement and proposed changes to the highway main lanes leading up to the bridge, and 2) The SL-12 Project in Dallas was completed for a proposed tunnel.

For the US 75 Project, aerial photogrammetry and LiDAR were collected within a 600-foot corridor along the main lanes (7,700 linear feet of roadway) and a 1,700-foot corridor at the bridge location. 1519 staff also completed a right-of-way verification map of the adjoining parcels along the project. Field crews set project control, performed on the ground surveying for above and below ground utilities, drainage structures, creeks, and obscured areas. 1519 also performed 3D terrestrial LiDAR scanning to collect bridge elements unable to be seen from the aerial survey.

For the SL-12 Project, aerial photogrammetry was collected within a 600-foot corridor along the main lanes and mobile LiDAR was collected within the existing right-of-way 11,000 linear feet of roadway. 1519 staff also completed a right-of-way verification map of the adjoining parcels along the project. Field crews set project control and performed on the ground surveying for above and below ground utilities, drainage structures, creeks, and obscured areas.

Deliverables included signed and sealed control sheets, tiled orthoimages, point cloud files, and Microstation files completed to TxDOT standards.