| Northbound Exit Ramp To SH-6/SH-146 in La Marque | Total Closure | Closed permanently beginning Friday, December 1, 2023 at 9:00 AM | Detour: Traffic will exit FM 519 and u-turn. Traffic will merge onto the IH45 southbound mainlanes at next available entrance ramp and continue on IH45 southbound mainlanes exit temporary SH6 westbound. Traffic will follow ramp to right onto existing ramp to SH6. | |
| Northbound from Delany Rd/ Century Blvd to FM-517 in La Marque/Texas City/Dickinson | 2 Outside Lane(s) | Closed continuously from 9:00 PM, Friday, May 10 to 5:00 AM, Monday, May 13 | | |
| Northbound Entrance Ramp from Holland in Texas City | Total Closure | Closed daily from 9:00 PM to 5:00 AM, Friday, May 10 to Monday, May 13 | All traffic will continue on the northbound frontage road and enter the northbound entrance ramp South of FM 646 to northbound I-45. | |
| Northbound Exit Ramp To Holland in Texas City | Total Closure | Closed continuously from 9:00 PM, Friday, May 10 to 5:00 AM, Monday, May 13 | Traffic wanting to access Hughes Rd or FM 517 will continue on the northbound main lane and take exit 20 towards FM 646, continue on the northbound frontage road to FM 646, take the U-turn under I-45 to southbound I-45, continue on the southbound frontage road to FM 517 or Hughes Rd. | |
| Northbound Entrance Ramp from FM-1764/Emmett F Lowry Expy in Texas City | Total Closure | Closed continuously from 9:00 PM, Friday, May 10 to 5:00 AM, Monday, May 13 | All traffic will exit FM 1764/Emmett F Lowry Expy towards Century Blvd and continue on the northbound frontage road and enter the northbound entrance ramp South of FM 646 to northbound I-45. | |
| Northbound and southbound Frontage Road from SAILFISH ST to BNSF Rail Road in /Bayou Vista/Tiki Island | Total Closure | Closed until further notice | Use next available U-turn at Tiki island. | |
| Northbound and southbound Mainlanes and Frontage Road from SH 96/Calder/Brittany Bay to FM-519/Main | 1 Alternate Lane(s) | Closed daily from 8:30 AM to 4:00 PM through Tuesday, December 31 | | |
| Northbound and southbound Mainlanes and Frontage Road from FM-519/Main to Tiki Dr in La Marque/Galveston | 1 Alternate Lane(s) | Closed daily from 8:30 AM to 3:00 PM through Tuesday, December 31 | | |
| Northbound and southbound Mainlanes and Frontage Road from SH 96/Calder/Brittany Bay to FM-519/Main | 1 Alternate Lane(s) | Closed nightly 8:30 PM to 5:00 AM through the morning of Tuesday, December 31 | | |
| Northbound and southbound Mainlanes and Frontage Road from FM-519/Main to Tiki Dr in La Marque/Galveston | 1 Alternate Lane(s) | Closed nightly 8:30 PM to 5:00 AM through the morning of Tuesday, December 31 | | |
| Northbound and southbound Frontage Road from Deats to FM-2004/Camp Wallace Access Rd. in Texas City | 1 Alternate Lane(s) | Closed daily from 9:00 AM to 4:00 PM through Tuesday, December 31 | | |
| Southbound Exit Ramp To FM-518 | 1 Inside Lane(s) | Closed overnight from 9:00 PM, Thursday, May 9 to 5:00 AM, Friday, May 10 | Use SH 96 exit ramp | |
| Southbound Exit Ramp To FM-518 | 1 Inside Lane(s) | Closed nightly 9:00 PM to 5:00 AM from Friday, May 10 to Monday, May 13 | Use SH 96 exit ramp | |