Interstates 49 and 910
The Business U.S. 90 portion of the Pontchartrain Expressway is also designated as Interstate 910, however it is not signed as such. This is a temporary designation that overlaps all freeway portions of Business U.S. 90 (the Pontchartrain Expressway, Crescent City Connection, and Westbank Expressway). When Interstate 49 is completed from Lafayette to New Orleans, Business U.S. 90/Interstate 910 will be resigned as Interstate 49.
Read more about this topic: Pontchartrain Expressway