Vermont Weigh Stations and Commercial Vehicle Enforcement

The Vermont Agency of Transportation (VTrans) and the Department of Motor Vehicles (DMV) Enforcement Division oversee commercial vehicle weight compliance on the state's 14,000 miles of public roads. Unlike states with massive fixed scale facilities, Vermont relies on a combination of permanent weigh stations on major Interstates and mobile enforcement teams that utilize portable scales on secondary state highways. The primary goal of these inspections is to preserve infrastructure and ensure that vehicles exceeding 80,000 pounds Gross Vehicle Weight (GVW) have the appropriate permits to travel on the state's mountainous terrain. DispatchTool assists carriers navigating the Green Mountain State by providing truck-safe routing that accounts for Vermont's specific bridge weight restrictions and state-authorized truck routes. Operators can use the platform to manage trip documentation and permit copies required during roadside inspections, ensuring that drivers are prepared for potential stops by the DMV Enforcement Division. Carriers looking to streamline their compliance documentation and routing can create a DispatchTool account to start organizing their fleet data.

Fixed Weigh Station Locations and Hours

Vermont operates two primary fixed weigh stations located on the Interstate system. The I-91 Northbound station is situated in Guilford at Mile Marker 7, serving as a major entry point for traffic coming from Massachusetts. The I-89 Northbound station is located in Sharon at Mile Marker 13. While these stations do not operate 24 hours a day, they are frequently staffed during peak daylight freight hours. According to the Vermont DMV, enforcement hours are randomized to ensure consistent compliance across different shifts. When the 'Trucks Must Enter' signs are flashing, all commercial vehicles with a GVWR over 10,000 pounds are legally required to pull in for weighing and potential Level I, II, or III North American Standard Inspections.

Mobile Enforcement and Portable Scales

A significant portion of Vermont's weight enforcement is conducted by mobile units. The DMV Enforcement Division utilizes marked and unmarked SUVs and trucks equipped with portable Haenni scales to weigh vehicles on state routes like US-7, VT-9, and US-4. These mobile teams focus on areas where heavy timber, dairy, and construction hauling are prevalent. Under Vermont Statutes Annotated Title 23, Section 1391, enforcement officers have the authority to stop any commercial vehicle suspected of being overweight and direct the driver to a location suitable for weighing. Drivers found exceeding their registered weight or the road's posted limit may be required to offload cargo before proceeding.

PrePass and Bypass Technology in Vermont

Vermont participates in the PrePass weigh station bypass system, which allows qualified carriers to bypass the fixed scales at Guilford and Sharon. The PrePass system uses Weigh-in-Motion (WIM) technology and transponders to verify a vehicle’s safety rating, credentials, and weight while the truck stays at highway speeds. If the system grants a green light, the driver does not need to enter the scale house, saving approximately 5 to 8 minutes per bypass and reducing fuel consumption by roughly 0.4 gallons per stop. To qualify for bypass privileges in Vermont, carriers must maintain an Inspection Selection System (ISS) score below 75, as monitored by the FMCSA.

Vermont Weight Limits and Axle Tolerances

The standard maximum gross weight for commercial vehicles on Vermont Interstates is 80,000 pounds, distributed across five axles. However, on state and town highways, the limit is often governed by the Federal Bridge Formula. Per 23 V.S.A. § 1392, Vermont allows specific exemptions for certain commodities. For example, a three-axle truck is generally limited to 40,000 pounds, while a four-axle truck may reach 60,000 pounds if it meets specific axle spacing requirements. The state also offers a 'Special Overweight Permit' for milk, forest products, and quarried stone, allowing up to 90,000 pounds on five axles or 99,000 pounds on six axles, provided the vehicle stays off the Interstate system.

Overweight Fines and Penalties

Fines for overweight violations in Vermont are calculated based on the number of pounds exceeding the legal limit. According to the Vermont Judicial Bureau's fine schedule, a violation of 1 to 1,000 pounds overweight may result in a fine of approximately $100, but costs escalate rapidly for significant infractions. If a vehicle exceeds its permitted weight by more than 10,000 pounds, fines can exceed $1,000 plus administrative fees and surcharges. Furthermore, a carrier's Safety Measurement System (SMS) score is negatively impacted by weight violations, which increases the likelihood of future inspections at all weigh stations across the United States.

Bridge Restrictions and Town Highway Access

Vermont is known for its high density of historic bridges and narrow town highways, many of which have weight limits as low as 8,000 to 16,000 pounds. Local municipalities have the authority under 23 V.S.A. § 1396 to post lower weight limits on town-maintained bridges and roads. Truckers must be vigilant for 'TH' (Town Highway) markings and orange 'Posted' signs, especially during the spring 'Mud Season' (typically March through May), when temporary weight restrictions are strictly enforced to prevent road base damage. Navigating these routes without a local permit or exceeding the posted limit often results in immediate intervention by local police or county sheriffs.

Sources

Vermont Agency of Transportation (VTrans) (2024) — https://vtrans.vermont.gov/operations/cve Vermont Department of Motor Vehicles Enforcement (2024) — https://dmv.vermont.gov/enforcement Vermont Statutes Annotated Title 23 (2023) — https://legislature.vermont.gov/statutes/section/23/013/01392 PrePass Vermont Locations (2025) — https://prepass.com/locations/

Frequently asked

Which weigh stations in Vermont use PrePass?

The fixed weigh stations on I-91 Northbound in Guilford and I-89 Northbound in Sharon are both equipped with PrePass technology for electronic bypass.

What is the maximum weight for a truck on Vermont Interstates?

The maximum standard gross vehicle weight is 80,000 pounds, though specific permits can allow for higher weights on non-Interstate state highways for certain commodities.

Do I have to stop at a weigh station if the sign is not flashing?

No, if the 'Trucks Must Enter' signs are not activated and there are no directions from an enforcement officer, you are not required to enter the scale facility.

What is the fine for bypassing a weigh station in Vermont?

Failure to obey a regulatory sign (skipping an open scale) is a moving violation that can result in fines starting at $162 and points added to the driver's CDL record.

Are there weight restrictions during Vermont's mud season?

Yes, from late winter to early spring, many town highways are posted with limits often restricted to 15,000 or 20,000 pounds to prevent road damage during the thaw.