| 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 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 nightly 9:00 PM to 5:00 AM from Friday, May 3 to Monday, May 6 | Use SH 96 exit ramp | |
| Southbound Entrance Ramp from SH-6/SH-146 in La Marque / Bayou Vista | Total Closure | Closed continuously from 9:00 PM, Friday, May 3 to 5:00 AM, Sunday, May 5 | Traffic to use I-45 NB entrance ramp to continue onto northbound I-45, then take Exit 10 to FM519. Traffic to use U-Turn lane at FM519 to enter the southbound I-45 frontage road to continue onto I-45 southbound. | |
| Southbound at SH-6/SH-146 in La Marque / Bayou Vista / Tiki Island | 2 Alternate Lane(s) | Closed continuously from 9:00 PM, Friday, May 3 to 5:00 AM, Sunday, May 5 | | |