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Tacoma Narrows Bridge Project

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•  Building the New Tacoma Narrows Bridge
TNB Tolling


•  Nighttime noise construction information, (253) 620-4440
•  Contact the TNB Office, 1 (877) 762-7769

Contact us

Lisa Murdock
Olympic Region Communications Manager
  (360) 357-2789
WSDOT Olympic Region
  (360) 357-2600
Contact us and tell us
what you think:
orfeedback@wsdot.wa.gov or
Online Bridge Form

WSDOT
3214 50 Street Court NW, Building D, Suite 302
Gig Harbor, WA 98335

TNC
2110 14th Ave. NW
Gig Harbor, WA 98335


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Fixed Price Summary

January 2001 Fixed Price $540 million

Adjustment for Inflation

$37 million

Accounts for an average inflation of construction equipment, supplies, materials, and labor prices at 4.5% for 21 months. Current prices were provided and verified from suppliers where possible.


Increased Expenses Relating to Insurance Bonding

$14 million

As a result of the September 11, 2001 terrorist attack, availability and costs of insurance and bonding has changed. Some insurance policies and coverages are no longer available. Some policies are more expensive and some deductibles have also increased.


Other Miscellaneous Cost Changes

$13 million

Delay in notice to proceed resulted in cost impacts for:

  • Marine equipment previously available in the local area has moved to the California projects and equipment has to be mobilized or built to accommodate
  • Added costs to accommodate weather and fish window impacts
  • Scope increases as a result of permit conditions for permits obtained after the January 2001 fixed price
  • Project office costs

Adjustment for Increased Overhead and Profit

$11 million

Increased as a result of other increases in the contract.


January 2002 Update to Estimate

$75 million


September 2002 Fixed Price $615 million


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