The Texas Department of Transportation (TxDOT) has announced the latest in detours and closures associated with the “Big 6” Construction project: Friday, July 17 Northbound mainlanes between William J. Bryan Parkway and Old Reliance Road/Martin Luther King Street – Single-lane Closure – 7:30 p.m. – 6:30 a.m. The northbound mainlane right lane will be closed to set traffic barrier. Additionally, the northbound entrance ramp just south of Old Reliance Road/Martin Luther King Street and the northbound SH 21 exit ramp will be closed. Traffic can access SH 21 by using the northbound Old Reliance Road/Martin Luther King Street exit ramp. Northbound frontage road between William D. Fitch Parkway and Creagor Lane – Single-lane Closure – 7:30 p.m. – 6:30 a.m. The northbound frontage road left lane will be closed to haul off excavated material. Additionally, the northbound Barron Road exit ramp will be closed and Barron Road can be accessed by using the northbound William D. Fitch Parkway exit. Northbound between Business 6/Texas Avenue – Single-lane Closure – 7:30 p.m. – 6:30 a.m. The northbound right lane will be closed at the southbound frontage road/Deacon Drive intersection to set traffic barrier. Northbound frontage road between University Drive and Briarcrest Drive – Single-lane Closure – 7:30 p.m. – 6:30 a.m. The northbound frontage road left lane will be closed to set traffic barrier. Additionally, the northbound entrance ramp just south of Briarcrest Drive will be closed. Sunday, July 19 Northbound mainlanes between Barron Road and Harvey Road – Full Closure – 7:30 p.m. – 6:30 a.m. All northbound traffic must exit at Rock Prairie Road and may re-enter the mainlanes south of Harvey Road. Entrance ramps south of Barron Road, Harvey Mitchell Parkway, and Southwest Parkway will also be closed. Drivers traveling to Texas Avenue should use Harvey Mitchell Parkway/Southwest Parkway and turn left onto Texas Avenue. When the mainlanes reopen, northbound traffic will be shifted from the existing mainlanes onto the newly constructed temporary widening pavement. Drivers should be alert for the new traffic pattern and follow all posted signs. Monday, July 20 Northbound mainlanes between Barron Road and Harvey Road – Full Closure – 7:30 p.m. – 6:30 a.m. All northbound traffic must exit at Rock Prairie Road and may re-enter the mainlanes south of Harvey Road. Entrance ramps south of Barron Road, Harvey Mitchell Parkway, and Southwest Parkway will also be closed. Drivers traveling to Texas Avenue should use Harvey Mitchell Parkway/Southwest Parkway and turn left onto Texas Avenue. When the mainlanes reopen, northbound traffic will be shifted from the existing mainlanes onto the newly constructed temporary widening pavement. Drivers should be alert for the new traffic pattern and follow all posted signs. Northbound mainlanes between William J. Bryan Parkway and Old Reliance Road/Martin Luther King Jr. Street – Single-lane Closure – 7:30 p.m. – 6:30 a.m. Northbound mainlane left lane closure for drainage work. Tuesday, July 21 Southbound mainlanes between Harvey Road and Texas Avenue – Full Closure – 7:30 p.m. – 6:30 a.m. All southbound traffic must exit through the Southwest Parkway exit ramp and may re-enter the mainlanes at the Texas Avenue/Deacon Drive traffic signal. Additionally, the ramps north of Harvey Road, Southwest Parkway and Harvey Mitchell Parkway will be closed. When the mainlanes reopen, southbound traffic will be shifted from the existing mainlanes onto the newly constructed temporary widening pavement. Drivers should be alert for the new traffic pattern and follow all posted signs. Northbound mainlanes between William J. Bryan Parkway and Old Reliance Road/Martin Luther King Jr. Street – Single-lane Closure – 7:30 p.m. – 6:30 a.m. Northbound mainlane left lane closure for drainage work. Wednesday, July 22 Southbound mainlanes between Harvey Road and Texas Avenue – Full Closure – 7:30 p.m. – 6:30 a.m. All southbound traffic must exit through the Southwest Parkway exit ramp and may re-enter the mainlanes at the Texas Avenue/Deacon Drive traffic signal. Additionally, the ramps north of Harvey Road, Southwest Parkway and Harvey Mitchell Parkway will be closed. When the mainlanes reopen, southbound traffic will be shifted from the existing mainlanes onto the newly constructed temporary widening pavement. Drivers should be alert for the new traffic pattern and follow all posted signs. Thursday, July 23 Southbound mainlanes between Briarcrest Drive and Southwest Parkway – Full Closure – 8 p.m. – 6:30 a.m. All traffic must exit through the southbound University Drive exit ramp and may re-enter the mainlanes just north of Harvey Mitchell Parkway. Additionally, the southbound entrance ramps north of Briarcrest Drive, Harvey Road, and Southwest Parkway will be closed. Please note that ramp closures will start at 7:30 p.m. Friday, July 24 Southbound frontage road between Briarcrest Drive and University Drive – Single-lane Closure – 7:30 p.m. – 6:30 a.m. The southbound frontage road left lane will be closed to set traffic barrier. Additionally, the southbound entrance ramp north of University Drive will be closed. Southbound frontage road between University Drive and Harvey Road – Single-lane Closure – 7:30 p.m.- 6:30 a.m. Southbound frontage road left lane will be closed to set traffic barrier. Additionally, the southbound entrance ramp north of Harvey Road will be closed. TxDOT encourages drivers to watch for changing traffic patterns, be sure to follow signs, and to always use caution.