at this interchange, but joins I-93 northbound and continues towards Concord, interchanging with the southern terminus of I-89 along the way. No definitive northern terminus for the turnpike exists as far as signage is concerned. This endpoint was originally at a traffic circle next to downtown Concord that has since been replaced by Exit 14 with NH-9. There are two mainline toll plazas on the turnpike, in Bedford and Hooksett, that each charge $1.00 for cash and out of state E-ZPass users. The Bedford mainline toll plaza, located between Exit 13 and I-293, replaced the Merrimack toll plaza (formerly located at what is now Exit 11) in the early 1990s. Ramp tolls also exist at I-93 Exit 11 at the mainline toll plaza in Hooksett. E-ZPass readers were installed in all toll locations in 2005, and the state currently offers a 30% discount for using an NHDOT issued E-ZPass. Major rest areas combined with state-run liquor stores are located on either side of the highway in Hooksett just north of the mainline toll plaza on I-93. On July 18, 2014, the Exit 12 ramp tolls in Merrimack were removed, and on January 1, 2020, the Merrimack Exit 11 ramp tolls were removed. Toll collection at Exit 10 in Merrimack ended on December 31, 2021. The proposed (but mostly unbuilt) Circumferential Highway around the east side of Nashua is defined as part of the turnpike. Henri A. Burque Highway, the surface road that US-3 uses to get between exit 7 of the turnpike and the Daniel Webster Highway in northern Nashua, is also part of it. Signage Signs for the Everett Turnpike consist of a rectangle with a rounded bottom, a green circle, and green text that says "Everett Turnpike" above the circle, with the word "Turnpike" curved along the top edge of the circle; this signage is similar in design to that for other New Hampshire turnpikes. For the US 3 segment in Nashua, there is an Everett Turnpike sign in Massachusetts just south of the border northbound alongside the US 3 shield on an overhead sign, and several others along overhead signs through Nashua. Mile markers also contain the Everett Turnpike shield in Nashua, and combined US 3 and Everett Turnpike shields are posted along the side of the road on stand-alone posts, though most on-ramp signage only indicates US 3. Signs for the turnpike are most prominent on