The M65 was closed in both directions within junction 3 (Brimmicroft) at approximately 8.30am on Friday (May 13).
National Highways said this was due to an “infrastructure defect”.
“Structural engineers are carrying out inspections,” a spokesman added.
“Thanks for your patience.”
Congestion was building between junctions 2 (Clayton Brook) and 4 (Earcroft) following the closure.
Delays of around 15 minutes were reported in the area, with average speeds reaching 10mph.