Deputies tell Fox 51 the semi made it past the first bridge, but hit the second one on Highway 271 near I-20.
The driver was carrying an oversized steel frame that hit the bridge.
No injuries were reported.
Both northbound lanes were blocked for a few hours.
Original Report: Smith County DPS tells Fox 51, they are in route to an accident involving an 18-wheeler on Highway 271, at the intersection of Interstate 20.
Part of the load the 18-wheeler was carrying hit the bridge, and fell into the road.
TxDot is on their way to assist DPS in clearing the road.
Officials tell Fox 51, they expect the road to be blocked for at least an hour.