Highway Design Manual

(Revised January 2023) US Units

HIGHWAY DESIGN MANUAL, The Connecticut has been developed to provide uniform design practices for preparing roadway plans. The Manual presents most of the information normally required in the design of a typical highway project. The highway designer should attempt to meet all criteria presented in the Manual; however, it should not be considered a
standard that must be met regardless of impacts. The highway designer must consider the
social, economic or environmental impacts that result from the design values selected.

The highway designer should develop solutions that meet the Department’s operational and safety requirements while preserving the aesthetic, historic or cultural resources of an area. The Department has designated certain highways or segments of highways that abut significant natural or cultural features as Scenic Highways. The criteria for and listing of Scenic Highways is included in an Appendix to Chapter One. Designers must exercise good judgment on individual projects and, frequently, they must be imaginative, innovative and flexible in their approach to highway design. Designers are reminded that the projects they work on are not just
Department projects, but everyone’s project.