Highway Surveying Manual
The Highway Surveying Manual presents surveyors' methods and departmental rules that apply to highway surveying operations of the Washington State Department of Transportation. The manual is intended to help standardize surveying practices throughout the department and to be a useful tool for department surveying crews.
Individual chapters
Chapter 1 Survey Team (PDF 236KB)
Chapter 3 Equipment (PDF 270KB)
Chapter 4 Electronic Data Controllers (PDF 234KB)
Chapter 5 Public Lands Survey System (PDF 5MB)
Chapter 6 Survey Datums (PDF 1.64MB)
Chapter 7 Accuracy Classification and Standards (PDF 367KB)
Chapter 8 Global Positioning System (GPS) (PDF 994KB)
Chapter 9 Total Station System (TSS) (PDF 291KB)
Chapter 10 Differential Leveling (PDF 391KB)
Chapter 11 Geometrics (PDF 1.5MB)
Chapter 12 Photogrammetry (PDF 198KB)
Chapter 13 Control Survey Procedures (PDF 267KB)
Chapter 14 Location Survey Procedures (PDF 437KB)
8,683 animals crossed the Snoqualmie Pass East Project area
as recorded by WSDOT and partners in 2020 and 2021.
46% increase in Amtrak Cascades ridership to 251,000 passengers
in 2021 compared to 172,000 in 2020.
Nine wetland and stream mitigation sites across 32.7 acres added
to our monitoring program in 2021 to help offset climate change impacts.