AOC’s Utility Tunnel Improvement Plan: Two Tunnels Not Assessed

As noted, because AOC’s contractor has not finished assessing two of the five tunnels, AOC’s plan does not fully identify the tunnel problems. The contractor expects to complete its assessment of the two tunnels in December 2006.

Combining the information it currently has on the condition of the tunnels, AOC prioritized the tunnel projects into immediate, short-term, and longer-range initiatives and established accountability for these projects. AOC plans to initiate its immediate improvements—designed to mitigate health, life safety, structural, and heat stress concerns—by September 2007. AOC plans to initiate its short-term improvements—designed to correct mechanical, electrical, and structural defects—in fiscal years 2008 through 2012. AOC estimates the cost for the improvements in the plan to be $119 million over the next 6 years.

AOC also reported $14.4 million in longer-range initiatives intended to mitigate the known problems in the tunnels through 2015. AOC’s longer-range initiatives include conducting quarterly structural inspections, making necessary annual repairs, and modifying procedures to reflect changing tunnel conditions.

According to AOC, its plans were based on information known at the time the report was being developed and are preliminary. As the condition assessments and alternatives study are completed, AOC expects to adjust its work plans, cost estimates, and schedules as appropriate.

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