Project provides opportunity to enhance 500 acres of upper Estuary by breaching I-95 Embankment. It will be exempted from the ACEC Designation as it is approved by CZM through its Federal Consistency Review.
|Project First Cost at 2020 price levels||$231.5 million|
|Federal Cost (64%)||$149 million|
|Non-Federal cost (36%)||$82.5 million**|
** includes: Lands, Easements, Rights-of-Ways, Relocations, & Cash Contribution
|Non-federal Operation, Maintenance & Replacements||$600,000/year|
*Updated to 2020 p. l. using construction cost index.
*Costs incl. Planning, Engineering & Design (PE&D), Construction Mgt (CM) & Real Estate (RE) & Relocation (R) of utilities costs
|Update Design & Permits
(Cost Shared 64/36)
|Planning, Engineering & Design (P,E&D)
(Incls. $1,140k for Envir. Restor./E. Saugus Mitigation.)
|Total Cash Prior to Construction||$7,290,000*|
|Costs During Construction:|
|Lands: Estuary & Other||$25,350,000|
|Total Non-Federal Cost||$82,530,000|
Note: Total non-Fed cost to COMPLETE P,E&D & Updates = $7.3 million.
|Preliminary 2020 Price Level*|
|Floodgate Structure||$ 148,000,000||$325,000/year|
|Point of Pines (w/revet.)||16,000,000||23,000|
|Parkland Dike, Wall, Tide Gate||11,000,000||31,000|
|Environ. Restor. (Breach i-95)||$6,600,000||$7,000|
|Update Feasibility Rpt.& Staff||900,000||Total||$605,000 /year|
|Total First Cost||$231,500,000|
*’88/’91 Costs Updated by RS Means Index, incl. PE&D, CM, RE, R
|2019 Price Level|
|Project First Cost, 2019 P.L.||$221,300,000|
|Interest During Construction||25,500,000|
| Interest & Amortization on Investment
(8 7/8%, 100 Years)
|Operation, Maintenance & Replacements||600,000|
|Total Average Annual Cost||$22,500,000|
The benefits and costs reflect a one (1) foot rise in sea level. Since there is a strong indication that sea level is accelerating, benefits will rise much higher with only a marginal change in costs, since the Floodgates would be designed to be easily modified for the higher rates of sea level rise. Benefits are not included for preventing damages to the Town Line/Linden Brooks Area of Everett, Revere & Malden, nor to the Upper Saugus River & Shute Brook areas of Saugus, or benefits to provide a safe harbor of refuge.