MOBILE SCANNING PROJECTS
throughout North Carolina
Project Summary
McKim & Creed and Terrapoint used mobile scanning technology to gather topographic and planimetric data for more than 50 miles of highway and 33 miles of railway. This marked the first time mobile scanning had been used in North Carolina for DOT. The data was mapped into CAD deliverables, which NCDOT used for design purposes on five sections of highway and three areas of railway. By our estimations, this method of data collection can potentially save 30% on costs when compared to helicopter photogrammetry. Data collection time is drastically reduced proportionally to the size of the project.
Project Details
|
Mobile Scanning Projects
(clockwise from top left)
Mobile scanning equipment is mounted in the bed of a pickup truck, which can travel at posted speeds; 3-D images compiled from scanned data; scanning route along U.S. 74/76/17 from Leland to Wilmington; a technician reviews scanned data in the back seat of a mobile scanning truck. McKim & Creed |
|
|
Mobile Scanning Projects
(Top image)
Planimetric mapping was produced showing edges of pavement, travelways, curbs and gutters, and bridge decks for the complex interchange of I-77 and I-85 in Charlotte, N.C.
(Bottom image)
Digital terrain modeling of pavement includes edges of pavement, travelways and curbs and gutters. A 5-ft. sample grid is also shown, which was derived from the scan data and helped reveal any roadway features/contours that would have been missed if linework alone was used.
McKim & Creed |
|
|
Mobile Scanning Projects
To gather data along 33 miles of North Carolina railway, the team retrofitted the mobile scanning vehicle to a hi-rail truck. The truck traveled a large percentage of the project areas in both directions to ensure full scanning coverage.
McKim & Creed |
|