The Katy Freeway is open again early Tuesday after a crash that shut down all mainlanes.

Just after 1 a.m. police say an 18-wheeler’s tall load struck the bridge at Houston Avenue not far from downtown. The impact knocked loose one of the tanks the big rig was hauling, and it fell onto the roadway.

No injuries were reported but the freeway was closed for a couple of hours.

There did not appear to be serious damage to Houston Avenue.