Specifications include, but are not limited to: 1. Cut a 3-ft trench along the specified wheel path of the east lane by milling and removing existing HMA and/or base material. The contractor shall decide the amount of material to be removed in order to provide a final surface with the longitudinal profile shown in reinforcement grid to provide a minimum 2-inch concrete cover for the slab thickness to be placed. 4. Tie rebars at their intersections with wires. Use rebar chairs to support the reinforcement grid at the proper height. Place chairs at a spacing so as not to allow the rebar to bend or deflect. Tie all splices with wire and provide a 30-inch overlap of rebars at splices. Stagger the lap locations so that no more than ⅓ of the longitudinal steel is spliced within any given 2-ft length of the 3-ft cut trench. 5. Place concrete mix with a minimum 28-day compressive strength of 4000 psi. Shape the concrete to taper the edges of each simulated rut segment. Cut joints ½- inch deep at 10- ft intervals on each segment. Seal the joints. Place concrete mix to get the target rut depths shown in Figure 3 that conforms to the tolerances given in Table 1. Figure 3. 2. Fill the trench with Portland cement concrete and shape the concrete to provide the simulated rut depth profile shown in Figure 3. Prior to placing concrete, repair areas of the existing flexible base disturbed or damaged by trenching. 3. The concrete on each simulated rut segment shall be at least 4-inches thick. Prior to placing concrete, place the reinforcement grid on each simulated rut segment. Use #4 Grade 60 or higher deformed bars for the reinforcement grid. Place rebars at 15-inch intervals longitudinally and transversely to form the reinforcement grid on each segment. When placing 4-inch or 5-inch thick concrete slabs, position the rebars at mid-depth of the slab. For thicker slabs, position reinforcement at ⅓-depth from top of slab. Set up