Oregon Weigh Stations & Ag Inspection

When Oregon makes you pull in

Oregon keys the duty to the sign. An 'OPEN' board at a permanent truck scale means report in, and blowing past it is a Class A traffic violation with a $440 presumptive fine (ORS 818.400), separate from any weight ticket. Disobey an officer or weighmaster rather than a sign and it climbs to a Class B misdemeanor. The state's free Green Light program preclears compliant trucks by transponder, so a green reading lets you hold the freeway. Ashland, Woodburn, Cascade Locks, and Umatilla anchor the I-5 and I-84 corridors, and cameras chase bypassers.

Stations, bypass, and inspection

• Who must stop: Only when a sign directs
• Where the stations are: Permanent scales sit on the I-5 corridor (Ashland, Woodburn) and I-84 (Cascade Locks, Umatilla), plus Klamath Falls and other highways. Each carries an OPEN/CLOSED sign and hours vary. Green Light weigh-in-motion reads compliant trucks at speed and preclears them past the ramp, and cameras plus vehicle detection flag anyone who runs an open scale.
• Bypass: Three options. Oregon's own Green Light preclearance is free and transponder-based at state scales, and PrePass and Drivewyze also operate here. A green reading lets you hold the freeway; a red or no signal sends you to the ramp. Green Light reads compliant trucks by weigh-in-motion at highway speed.
• Ag / border inspection: No mandatory border produce stations. The Oregon Department of Agriculture handles nursery and quarantine inspection off the highway, not at roadside checkpoints. The ag stops you actually hit are across the line in California, heading south.
• Fine for passing an open station: Class A traffic violation (ORS 818.400(4)): a $440 presumptive fine, $2,000 maximum (ORS 153.019, 153.018), charged in addition to any weight, size, load, or equipment penalty. That is what running an OPEN sign at a permanent truck scale costs you, and it is the same charge for ignoring the right-lane sign at a weigh-in-motion site. It rises to a Class B misdemeanor, up to 6 months in jail and up to $2,500, only when you disobey a sign, signal, or direction given by a police officer, motor carrier enforcement officer, or weighmaster (ORS 818.400(5)). ODOT and OSP will chase a bypasser down and can escort the truck back to the scale.

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