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[QUOTE="Ottoble, post: 2110680, member: 2539"]
Also in Engineering/Consulting: yeah how would you like that fee on your books $2m for cut and paste yeah that will help the bottom line. I think ottomets is right though parsons is probably there for the tunnel review they do a ton of municipal tunneling jobs...#7 subway extension to name one huge one. There are definately challenges with the tunnel option.

If they did go with a tunnel Ive always thought that a drilled soldier or slurry wall approach where you build the walls and roof of the tunnel at grade before excavating below with standard non tbm equipment makes sense for the soil conditions. Coastal cities with similar soil conditions sometimes use this method.

Id also put it under Townsend street with the walls on/off ramps installed in grassy areas outside the current roadway. You could close one block at a time to install the roof framing then excavate below the roof with active traffic above. Least impact to 81 (torn down after new is complete) and city traffic flow is adjustable around sections of Townsend. Many streets that used to cross Townsend before orig 81 construction no longer do, limiting crossflow costs that force weekend/offpeak work to Adams Harrison genesee and Erie.

I think this approach would also reduce cost of what they proposed as the tunnel budget originally.

Otherwise for the most part the other options make more sense for money. in a perrfect world where money was not part of it tunnel is great but if we don't have a way to pay for the tunnel were just spending time and escalation budget.

$2m please...
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