Thankfully, refineries can customize the product a bit for the market. They do this mostly to change the boiling point, but it affects freezing point too. Northern regions in winter will have gasoline with a lower freezing point. Southern Arizona in summer will have gasoline with a higher freezing point. Gas with ethanol will freeze lower. I would hazard a guess that for northern-state winter blend gas, going down to -70F (the freezing temperature of octane) is fine. Of course, that's probably all moot. Gasoline engines don't start when they get too cold, because the fuel doesn't vaporize properly.
Visitors Guide. Lake Pontchartrain Causeway. The Lake Pontchartrain Causeway holds the title for the longest bridge over water at 23 miles long. It officially opened in 1956, and cut travel time from North Shore communities to the city of New Orleans by 50 minutes.
At the south end of town are the scenic Rainbow Bridge, the souths tallest bridge, spanning 176 feet above and 680 feet across the Neches River. Adjacent, is the Veterans Memorial Bridge, the sister span to the Rainbow Bridge. At the north end of town are double bridges crossing Cow Bayou on State Highway 87. One of which is The Cow Bayou Bridge, an old swing bridge that was dedicated and opened in 1941. It is one of two of its kind and age in the entire state. At the east entrance of town, is a smaller steel drawbridge that began operation prior to 1936. RAINBOW BRIDGE.