Clean Truck Check Credentialed Tester

Clean Truck Check in Walsenburg, CO

1 credentialed tester in Walsenburg.

Testers in Walsenburg

Nearest in-person tester to Walsenburg

The closest CARB-credentialed Clean Truck Check tester is Jonny’s Diesel Service in Denver, Colorado — about 143 miles away (straight-line). Smart CTC tests over the truck’s OBD port from anywhere, with no drive and no appointment.

Trucking activity in Huerfano County

Clean Truck Check applies to heavy-duty vehicles that operate in California — including out-of-state trucks based here that run loads west.

Trucking establishments
3
Trucking employees
6

Source: FMCSA MCMIS carrier census, US Census County Business Patterns 2021.

Freight corridors near Walsenburg

Walsenburg sits on I-25, I-25-BUS, I-25-Business, US-160, CO-10 and CO-12. Trucks running these routes into California fall under CARB’s Clean Truck Check — Smart CTC lets them test remotely without leaving the road.

Source: OpenStreetMap (© OpenStreetMap contributors).

Nearby truck stops

OpenStreetMap-tagged truck stops, services areas, and HGV-marked fuel stations within 25 miles of Walsenburg. Useful for routing a service stop around your CTC test.

+1 more within 25 miles.

Source: © OpenStreetMap contributors. Last updated 2026-05-27.