Specifications include, but are not limited to: -Access hatch replacement work includes excavation, enlargement of ladder wells, and replacement of access hatches and ladders. Eight (8) access hatches and ladders to be replaced or installed in this phase. -Failed embedded slot inserts (AF) to be removed and infilled with a patching mortar to prevent continued deterioration at these common points of failure. (Approx. 93) Connections originally made to the slot inserts to be made directly to the concrete tunnel surface using stainless steel expansion anchors. -Failing/spalled expansion joints (JR3/4) to be repaired and resealed. (Approx. 11) -Severely spalled areas with exposed reinforcement (SPAL, SP, COL 3-4) to be patched with a repair mortar after exposed reinforcement is treated with a bonding/anticorrosion agent.