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 B misdemeanor (ORS 818.400), separate from any weight ticket. 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 B misdemeanor (ORS 818.400): up to 6 months in jail and up to a $2,500 fine, charged in addition to any weight, size, load, or equipment penalty. ODOT and OSP will chase a bypasser down and can escort the truck back to the scale.

More for Oregon