A section of I-93 through Franconia Notch State Park, called the Franconia Notch Parkway, was constructed as a two-lane freeway with a median divider. This was built as a compromise between the state's park department and highway officials. The speed limit on the parkway is . Originally, this section's signage read U.S. 3 TO I-93, complete with its own exit number sequence, but this has since been replaced by I-93 and US-3 signage along the entire length of the parkway. The exits were renumbered to Exit 34A, 34B, and 34C. This section of the highway is the only remaining section of two-lane freeway on an Interstate highway in the United States.