If your project involves working within a Caltrans right-of-way — including state highways, freeways, or any state-maintained road — you need a Caltrans Encroachment Permit before you break ground. This guide walks you through exactly what the permit is, when you need it, and how to get it approved without costly delays.

What Is a Caltrans Encroachment Permit?

A Caltrans Encroachment Permit authorizes contractors, utilities, and public agencies to perform work within the Caltrans right-of-way (ROW). The ROW includes not just the road surface, but also shoulders, medians, drainage areas, and any land Caltrans controls adjacent to a state highway.

Without a permit, any work in the Caltrans ROW is illegal and can result in stop-work orders, fines, and removal of completed work at your expense.

When Do You Need a Caltrans Encroachment Permit?

• Utility installations or repairs (water, gas, fiber, electrical, telecom) crossing or running along a state highway
• Road construction or grading adjacent to a state highway
• Temporary lane or shoulder closures on a state route
• Driveway or access road connections to a state highway
• Landscaping, grading, or drainage work within the ROW
• Placing signs, signals, or other structures within the ROW
• Surveying or geotechnical investigations within the ROW

Which Caltrans District Covers Your Project?

California is divided into 12 Caltrans districts, each with its own permit office. The district that covers your project area processes your permit application. Key districts for Southern California:

• District 7 — Los Angeles and Ventura Counties
• District 8 — San Bernardino and Riverside Counties
• District 11 — San Diego and Imperial Counties
• District 12 — Orange County

What Documents Do You Need?

A complete Caltrans encroachment permit application typically requires:

• Completed Caltrans Encroachment Permit Application (Form TR-0100)
• Traffic Control Plan (TCP) — PE-stamped for most projects near travel lanes
• Project plans and drawings
• Proof of insurance meeting Caltrans minimums (typically $1M general liability)
• Contractor license number (C or A license)
• Utility notification (USANORTH / Dig Alert confirmation)
• Environmental clearances if applicable (wetlands, endangered species areas)
• Permit fees (vary by project scope)

How Long Does a Caltrans Encroachment Permit Take?

Pro tip: Submit a complete, clean application the first time. Incomplete applications or non-compliant TCPs restart the clock and can add weeks to your timeline.

Common Reasons Caltrans Rejects Permit Applications

• TCP does not meet Caltrans Highway Design Manual or Standard Plans requirements
• Missing PE stamp on the traffic control plan
• Insurance certificate does not name the State of California as additional insured
• Incorrect or incomplete TR-0100 form
• Missing utility notification documentation

How Safe Pass Traffic Helps

Safe Pass Traffic has prepared PE-stamped traffic control plans for dozens of Caltrans encroachment permit applications across Districts 7, 8, 11, and 12. We know exactly what each district’s reviewers look for — and our plans get approved without revisions.

We also assist with the full permit application package, including coordinating with your engineer and insurance broker to make sure everything is in order before submission.

Call or text (714) 362-1348 or request a free quote to get started.