All oversize loads entering the City of San Marcos, located in Hays County, must conform to the requirements set by the Texas Department of Transportation (TxDOT).

In general, any vehicle over 12 feet in width, 14 feet in height, and within the super heavy weight class (over 125,000 lbs) should obtain an oversize load permit from the San Marcos Public Works Department.

The City of San Marcos adheres to the Texas Administrative Code, Title 43, Part 1, Chapter 28, which governs oversize and overweight vehicles. Permits are issued in accordance with these regulations to ensure safe passage through the city.

In San Marcos, escort vehicles are required for oversize loads that exceed 14 feet in width, 16 feet in height, or are over 125 feet in length. Escort vehicles must be equipped with appropriate warning lights and signage as per TxDOT regulations.

For loads that require a police escort, arrangements must be made through the San Marcos Police Department's Traffic Unit. A minimum of 48 hours' notice is required for police escort scheduling, and fees apply based on the number of officers required.

To apply for an oversize load permit in San Marcos, applicants can submit their requests online through the TxDOT Permit Portal or by contacting the San Marcos Public Works Department directly at (512) 393-8300. Required documentation includes proof of insurance, detailed load specifications, and proposed route information.

Applicants must also comply with the City's specific requirements, including providing a detailed itinerary and ensuring compliance with all relevant TxDOT regulations.

Oversize loads are restricted from traveling during peak traffic hours (7-9 AM and 4-6 PM, Monday through Friday) on major roads like Interstate 35 and State Highway 123.

During special events or festivals, such as the San Marcos Music Festival, additional restrictions may apply. It is the permittee's responsibility to check with the City's Event Hotline for up-to-date information.

Certain neighborhoods and historic districts have restricted routes; loads must be routed around these areas to minimize disruption.

The base permit fee for oversize loads in San Marcos is $75. Additional fees are applied based on the size and weight of the load: $25 for each additional foot over 12 feet in width, $50 for each additional foot over 14 feet in height, and a weight fee schedule that ranges from $100 to $500 for loads over 125,000 lbs.

Route complexity fees may also apply for loads requiring specialized routing or escorts. The total fee is calculated based on the specifics of the load and route.