TxDOT crews will shut down the I-35 Northbound exit to FM 3009 and the Schertz Parkway entrance ramp on Sunday night.
The closures are being done to rebuild exit ramps and finish work on the Northbound frontage road. An extra lane will be added to the exit to alleviate congestion.
Crews are rebuilding the exit in an effort to better align it with a new entrance ramp from FM 1518.
Traffic headed to FM 3009 will use the Schertz Parkway exit.
Construction should wrap up by the beginning of February. However, if the project is completed early, the project contractor will be awarded a bonus from TxDOT.
The ramps are expected to reopen on Feb. 3.