Mobile LiDAR scanning was completed of Van Dyke Road (M-53) over the Clinton River in Sterling Heights, in the Metro Region. A structure survey of the two 250′ span bridges was completed. Hydrographic cross sections were mapped. The road surface was scanned with mobile LiDAR to protect surveyors from traffic travelling well above the posted 70 MPH speed, at a curve with limited sight distance, and in an area were there were no shoulders on the bridge. The cost of traffic control would have been prohibitive and the week long impact to commuters due to lane closures was avoided.
The point cloud data also allowed engineers to access detailed information at specific areas when the need arose during design. The use of mobile LiDAR helped avoid remobilizations and additional costs.