We have received a statement from TXDOT with more information about the damage on the bridge:
"Our engineers are still assessing the situation, but it appears the damage is due to wear and tear over time. This does happen occasionally. The bridge structure itself is safe, but because there is a highway below it, we have to close the affected lane until repairs can be made. The police department tells me that a lane of SH 351 is currently closed below the bridge until engineers can review the situation further."
According to the Texas Department of Transportation the driving lane westbound I20 at SH351 is currently closed until further notice due to pavement damage on the bridge.
Police have southbound traffic under the overpass blocked off, expect delays.