Design Alternatives

Given the requirement to maintain grade, the design alternatives under consideration for this project for the inside lanes are:

1.Remove HMA and Replace: removal of all existing HMA and overlay with the same thickness

2.If alternative 1 is viable, further evaluate partial HMA removal and overlay

Note that the second alternative is only feasible if the first alternative is feasible.

Removing the PCC and replacing that with HMA is a costly option and will not be evaluated here. This is because the layers below the PCC is relative strong and there is no need to enhance them, hence no need to remove the PCC layer.