Interstate 610 was part of the urban Interstate numerology submitted to the American Association of State Highway Officials (AASHO) by the Louisiana Department of Highways on July 25, 1958. AASHO however questioned the placement of I-10 and I-610 in New Orleans in a letter dated August 29, 1958:
This office agrees with your submission except that we question, as does the local office of the Bureau of Public Roads, whether or not your proposals 10 and 610 should not be reversed in the city of New Orleans.
The route carrying the major traffic stream should be allotted the two digit number and I am sure that you have considered this matter. However, Route 10 seems to be rather circuitous.
Nonetheless, this was eventually approved as part of the statewide numbering plan by AASHO on November 10, 1958.
Interstate 610 was constructed between I-10 and Canal Boulevard along with the Pontchartrain Expressway (I-10 from the 17th Street Canal southeast to Downtown New Orleans) in the early 1960s. Ensuing work was delayed because of a lawsuit involving construction of the highway through public parkland. The freeway was ultimately built from Canal Boulevard to I-10 at Franklin Avenue between 1972 and 1975.2
Completed on June 10, 2000, a $26.9 million project expanded the western interchange joining I-10/610 at Lakewood in New Orleans. With plans originating in the 1970s, work commenced in January 1998. I-10 was expanded to three eastbound lanes through the split with I-610, and to four eastbound lanes from West End Boulevard southward to Downtown.1