Route 22 Transit Enhancement

TWT assisted the NJ Department of Transportation in the establishment of horizontal control coordinates for 41 photo-identifiable points for photogrammetric mapping to be performed by BAE Systems ADR (BAE). Locations of photo-identifiable points were per direction provided by BAE and the Bureau of Geodetic Survey (BGS) for the Route 22 Transit Enhancement project. The project was oriented to the New Jersey State Plane Coordinate System, based upon the North American Datum of 1983 (NAD83) and North American Vertical Datum of 1988 (NAVD88). Accuracy for the control network established for this project met or exceeded classification standards for Horizontal Control, Second Order, Class I accuracy and Vertical Control, Second Order, Class I accuracy. The photo-identifiable point x,y,z values were then established utilizing RTK-GPS procedures.

The project area was situated along the US Route 22 corridor spanning the common edges of 3 USGS quad maps, namely, the north-south common edges of the Bound Brook and Plainfield maps and the east-west common edges of the Plainfield and Chatham maps. The western limit of the project area is near the intersection of County Route 527 with US Route 22 in Bound Brook. The eastern limit of the project area is near the intersection of Westfield Road with US Route 22 in Scotch Plains and required the establishment of the 41 aerial mapping control points needed for the aerial mapping within the project limits.