Claremont, Moultonborough set 6-ton seasonal weight limits as thaw begins

Claremont posted a 6-ton seasonal weight limit on city roads on March 6, 2026, warning residents that "Spring thaw has begun, and some local roads are now posted with seasonal weight limits." The city notice explained the reason: "As frost leaves the ground, road bases temporarily lose strength. Heavy vehicles can cause significant damage during this short window, leading to potholes, rutting, and costly repairs." Claremont residents with questions are directed to the Public Works Department at 603-542-7020; the advisory appears on the same city page that lists the March 10, 2026 school election ballot and a winter parking ban.

Three days after Claremont's posting, the Town of Moultonborough issued a public notice that "Effective Monday, March 9th, 2026, the Town of Moultonborough will be posting all of its Town roads to a maximum weight limit of 6 tons during the spring thaw period, per RSA 231:190-191." The town spelled out operational guidance for commercial drivers: "Contractors, construction companies, parcel services, fuel services, and solid waste haulers are asked to observe the posting by staying off soft road shoulders and reducing load weights. Special permission may be given depending upon weather conditions and time of day." Moultonborough directed inquiries about special permission and posting details to its Public Works Department at 603-253-7445; Town Hall contact information listed on the notice is P.O. Box 139, 6 Holland Street, Moultonborough, NH 03254, phone 603-476-2347. The town page displays the same public notice twice and lists related items including Annual Town Reports and a Transfer Station schedule change for March 14, 2026.

State guidance for posted sections of state highways differs from the municipal 6-ton restrictions. The NHDOT guidance cited in Oversize Io states, "On posted sections of State Highways under spring thaw restrictions, the maximum allowable vehicular weight is 30,000 lbs, or the cumulative width in inches of all tires contacting the road surface multiplied by 300, whichever is less." The NHDOT material also lists potential exemptions for septic pumper trucks, home heating oil deliveries, processed milk products, and maple sap, but cautions that "Exemptions are not automatic. District Engineer approval is required in every case." The guidance adds a practical warning that the NHDOT Spring Thaw Restrictions Viewer "does not display axle limits or per-segment reduction percentages" and instructs operators to "Confirm applicable limits with NHDOT before dispatching."

The numeric contrast matters for local routing: municipal 6-ton limits equal 12,000 lbs, well below the 30,000 lb metric cited for posted state highway sections. Examples in the NHDOT viewer include NH-31 in Washington, Sullivan County (ID 2182), and a viewer anomaly listed as Restriction ID 25160 with no populated route details, underscoring the need to verify state segments that run through or alongside Claremont and Moultonborough. Claremont's notice reiterates that municipal restrictions are temporary and "will be lifted as soon as conditions allow"; Moultonborough cites RSA 231:190-191 as its authority and offers case-by-case permissions. For immediate routing or delivery decisions, Claremont Public Works is 603-542-7020 and Moultonborough Public Works is 603-253-7445; businesses should also confirm state highway limits with NHDOT before dispatching.