Travelers are voting Lake Pontchartrain Causeway, I-10 Twin Span Bridge and Chef Menteur Bridge as the best of 7 bridges in Slidell. There are 16 bridges in Chalmette a city just 63 km from Slidell and 16 bridges in Meraux which is 66 km distant. The most popular of these are Lake Pontchartrain Causeway in Chalmette and Huey P. Long Bridge in Meraux. You can find 22 bridges in Louisiana and 426 bridges in the country of United States. Our members favorite in Louisiana is Lake Pontchartrain Causeway and Roberto Clemente Bridge is the top pick in United States. Want more? Check out our map of bridges in Slidell.