Tonight at Midnight: Northbound I-35 Closes Between Slaughter Lane and William Cannon Drive
The first of TxDOT's two overnight closures starts tonight at midnight and runs to 5 a.m., sending northbound drivers onto the frontage road at the William Cannon Drive exit.
South Austin's overnight detour starts tonight. TxDOT closes the northbound I-35 mainlanes between Slaughter Lane and William Cannon Drive tonight, Tuesday, October 27, from midnight to 5 a.m., for work on the Capital Express South elevated managed lanes - and the same closure repeats on Wednesday night, October 28, in the same hours.
During the closure, northbound drivers leave the mainlanes at the William Cannon Drive exit (Exit 228), continue on the northbound I-35 frontage road and re-enter at the next available entrance ramp, according to TxDOT. Drivers should remain alert, follow the signs and expect delays in the work zone.
The SH 71/Ben White Boulevard flyovers to southbound I-35 also remain on intermittent nightly closures, from 9 p.m. to 6 a.m., continuing through late 2026 for bridge column work. Signed detours route eastbound drivers via the South Congress Avenue exit and westbound drivers via the Burleson Road/Woodward Street exit.
The closures are part of the I-35 Capital Express South project, which is adding two HOV managed lanes in each direction between SH 71/Ben White Boulevard and SH 45 Southeast, plus a southbound bypass lane at Stassney Lane and William Cannon Drive. Construction began in November 2022 and is scheduled to finish in late 2028, weather permitting.
