Conn. Gen. Stat. § 14-269: Weight of vehicles and trailers engaged in construction work.

(a) The provisions of section 14-267a shall not apply to any four-wheeled motor vehicle equipped with pneumatic tires which is engaged in construction work or in supplying or transporting materials or equipment for public or private construction projects and which is operating upon a highway or bridge within twenty-five miles of such construction project.

(b) No such motor vehicle may be operated upon any highway or bridge if its gross weight, including its load, exceeds forty thousand pounds.

(c) The gross vehicle weight and wheel base limitations of section 14-267a shall not apply to any four-axled motor vehicle equipped with pneumatic tires which is engaged in construction work or in supplying or transporting materials or equipment for public or private construction projects, provided the Commissioner of Transportation may restrict or prohibit by signs, legal notices or direct notice the highways or bridges which may be used by such vehicles.

(d) No such four-axled motor vehicle may be operated upon any highway or bridge if its gross weight, including its load, exceeds seventy-three thousand pounds.

(e) Any person who violates the provisions of subsection (b) or (d) of this section shall be subject to the penalties set forth in subsection (f) of section 14-267a.

(f) The owner of any such vehicle operated over any highway or bridge in violation of any provision of this section or of section 13a-151 shall be liable for all damages which such highway or bridge may sustain as a result of such violation, and such damages may be recovered in an action at law by the authority in charge of the maintenance of such highway or bridge.

(g) The Commissioner of Motor Vehicles may require a special registration and may issue special and distinguishing number plates for each motor vehicle which is subject to the provisions of this section.