ST. PETERSBURG, Fla. – Motorists traveling northbound on I-275 should be prepared for nightly closures of the Exit 18 ramp to 26th Avenue South on Tuesday, July 30, and Wednesday, July 31. The closures will take place from 9 p.m. to 6 a.m., weather permitting. During these times, northbound traffic will be detoured to Exit 17 (US 19), where drivers can proceed north and continue towards 26th Avenue South. Advanced warning signs and electronic message boards will be in place to guide motorists through the detour. However, delays and congestion are expected, so please plan your travel accordingl…