TxDOT to close all lanes on busy S.A. interstate. Here's when

The Texas Department of Transportation (TxDOT) has scheduled a series of significant road closures affecting I-35 in both San Antonio and Waco. In San Antonio, TxDOT will close all lanes on a busy interstate section, specifically impacting southbound I-35 from Randolph to Fratt. This particular closure is necessary for the installation of steel beams. Simultaneously, activities in Waco involve the removal of the westbound S Valley Mills Drive bridge. These infrastructure projects are creating substantial disruptions for motorists traveling through these major Texas transit corridors during the specified construction windows. Coverage from MySA, WOAI, and KSAT focuses heavily on the San Antonio impacts, with KSAT reporting that local drivers are already voicing frustration regarding the ongoing TxDOT construction.

Meanwhile, KWTX and Baylor University have provided specific timing for the Waco-based disruptions. According to these reports, the I-35 mainlane closures in Waco are scheduled to begin on Saturday, August 29, at 7 p.m. and will remain in effect until 10 a.m. on Sunday. The combined reporting across these six outlets highlights a coordinated effort by TxDOT to execute high-impact structural work across multiple cities. This trend matters because I-35 is a critical artery for commercial and passenger travel in Texas. The removal of the S Valley Mills Drive bridge and the installation of steel beams in San Antonio represent essential structural updates to the interstate system. Because these projects require the closure of all lanes—rather than simple lane shifts—they create total bottlenecks that force traffic to divert.

The frustration noted by KSAT suggests a growing tension between the necessary pace of infrastructure modernization and the daily commute requirements of San Antonio residents. Observers should monitor the progress of the steel beam installation between Randolph and Fratt to see if further closures are required. Additionally, the timeline for the Waco mainlane closures concludes at 10 a.m. on Sunday, which will be the primary marker for the restoration of normal traffic flow in that region. Future updates from TxDOT will likely specify if the removal of the westbound S Valley Mills Drive bridge will lead to subsequent long-term detours or if the project will move into a new phase of construction following the weekend's overnight operations.