A private maintenance facility crossing at grade exists between this exit and the Missouri River.
Missouri began the plans for I-635 in 1958 when American Association of State Highway and Transportation Officials (AASHTO) approved proposals that also included what would become I-435 and I-470; the plan for I-635 took the route eastward along what is now K-5 to US 69 and northward across the Fairfax Bridge toward I-29.
[2] When money from the Highway Trust Fund became available for a new Missouri River crossing, I-635 got a more westward alignment after 1968.
[4][5][6] The interchange with I-70 and the bridge over the Santa Fe Railyard in Argentine were reconstructed in 2004.
[7] Maintenance work on the bridge over the Missouri River finished in September 2005.