Abstract: Precast stretchers in four basic configurations may be used to construct cribbing faces, end walls, and corners for virtually every retaining wall requirement. Each stretcher of the invention comprises an elongated body having two support heads with flat upper and lower surfaces for stacking the stetchers one on another. All the support heads are equally spaced and each head contains a vertical hole for receiving a steel tie rod that extends, in several threaded sections, from the footing to the top of the wall for tying together the stacked support heads and stretchers. Anchor rods for deadmen, bin wall anchorages, or rock bolts are connected to the vertical tie rods to form a rigid interlocked retaining structure.

Abstract: Precast concrete footings, stretchers, road slabs, and curbing in conveniently transportable sizes are used to construct road bridges and supporting abutments with a minimum of heavy equipment at the construction site. Each stretcher module comprises an elongated concrete body having at least two support heads with flat upper and lower surfaces for stacking one on another. All support heads are equally spaced and each contains a vertical hole for receiving a steel tie rod that extends from the footing to the top surface of the abutment for tying together the stacked stretchers. Anchor rods to deadmen and lateral tie rods interconnecting the wing walls of the abutment are connected to the vertical tie rods to form a rigid interlocked retaining structure for supporting the prestressed concrete road slabs.