Book Truck and Trailer Parking in San Marcos, TX

• For big rig parking in San Marcos, start with I-35. It is the main route through town, and it connects Austin to the north and San Antonio to the south. Take exits 204 or 205 if you need direct access to central San Marcos. Texas State Highway 123 links the southeast side to I-10, while Texas State Highway 21 runs through San Marcos and ties Bastrop in the northeast to Seguin in the southwest. Use those roads to plan your arrival before you burn hours hunting for 18-wheeler parking or semi truck parking. If your HOS clock is tight, get off I-35 early and keep your route simple. Watch your lane changes and leave room for the turn, especially if you are bobtail or pulling a full trailer. That keeps you from making last-second moves at the exit. It also gives you a cleaner shot into the city and less deadhead time if you are arriving late.

• I-35 runs north to south through San Marcos and connects you to Austin and San Antonio. For big rig parking, stay alert on the ramps and turns. It gets tight fast, and you do not want to force a bad lane change.
• US 281 sits a short drive east of I-35 and gives you another north-south option. Use it if traffic backs up or a crash slows the interstate, so you are not burning deadhead time while you look for 18-wheeler parking.
• TX 123 cuts through the area as a bypass and links I-35 with southeastern Texas. It is a solid move toward Seguin or the Gulf Coast when you want to keep rolling.
• TX 80 runs east to west through San Marcos and helps with local deliveries, farm access, and smaller towns around the city. That makes it useful for semi truck parking near a drop and for staying off heavier city traffic.
• Loop 82, known locally as Aquarena Springs Drive and part of Old Ranch Road 12, helps you move within San Marcos without backtracking. Use it to connect between roads and line up your next stop.

In San Marcos, TX, watch the weather. Plan your big rig parking so you are not scrambling with wet roads, heat, or a cold snap.

• Spring (March to May): Mild to warm days run from the mid-60s to high 80s (°F). Rain peaks in May, so watch slick pavement and use the calmer weather for maintenance before you roll.
• Summer (June to August): Hot, humid weather often tops 90°F, and heat advisories are common. Keep the cooling system ready, stay hydrated, and expect sudden thunderstorms that can drop rain fast, especially after a long stretch in the sun.
• Fall (September to November): It starts warm, then settles into comfortable lows in the 50s by late November. Cooler air lowers overheating risk and tire blowouts, which helps long hauls and semi truck parking plans.
• Winter (December to February): Winter is mild compared with northern states, and temperatures rarely drop below freezing. Still, keep winter gear handy, check antifreeze, and watch for frost, light ice, or snowfall before you look for 18-wheeler parking after dark.