Two other sections were constructed north of Pomerene and south of Redington but were never formally designated SR 76 or connected to the rest of the route.

ADOT continues to recognize SR 76 as a de facto designation, though all sections of the former route are unsigned and have mostly become locally maintained roads.

Both sections, currently part of Cascabel Road, have concrete highway bridges spanning two dry washes and the San Pedro River.

[8][9] In southeastern Pinal County, an incomplete section of highway, where only the road grading had been completed, exists directly southeast of Peppersauce Wash near San Manuel.

The section travels a short distance from the intersection of Redington Road and Veterans Memorial Boulevard before the grading abruptly ends at the edge of a dry wash.

[11][12] The designated northern segment of SR 76 began at the incomplete grading near Peppersauce Wash, near an intersection with Redington Road.

[11][13] The highway continued northwest along what is now Veterans Memorial Boulevard towards San Manuel, SR 76 continued along the eastern edge of San Manuel, serving as the main road to the mining town, with access to the town being provided by numerous residential and local arterial roads.

[13][12][11] The rest of the highway from Peppersauce Wash to San Manuel Mine had also been improved and paved, with two culverts and a railroad overpass being constructed on the short section north of SR 77.

Although the state had plans to extend the highway northwest past Pomerene, the proposal never materialized, and the southern section only ever reached a length of 2.06 miles (3 km).

This 1.20-mile (1.93 km) orphaned section of the highway, which included the Tres Alamos Wash Bridge, was meant to connect directly to the Pomerene Road segment.

[22] The short section of SR 76 that was completed near San Manuel was decommissioned as a state highway on December 16 of the same year.