The current SR 530 Bridge project from the West Bridge Approach North (WBAN) to Montlake Blvd. will continue with loud noise and vibration affecting the community and particularly the homes along East Hamlin St. on the north side and East Lake Washington Blvd. on the south side of 520.  This noise and vibration may also continue as an after-effect.

There are City of Seattle and federal regulation that limit construction noise and vibration.  WSDOT inspected some homes adjacent to the construction area to determine their pre-construction condition.  In Madison Park, some condos at the shoreline experienced severe damage.  As a precaution, property owners in Montlake adjacent to the construction are encouraged to document and montior the condition of their property, before, during and after the construction of the 520 project.

The above process includes taking photos of the interior and exterior of homes.  Interior plaster walls are potentially at risk of cracking and homes with brick masonry exterior walls are at risk for cracks in the mortar joints.  Vibration monitoring, which will document the levels that cause damage is being done currently in Madison Park by WSDOT, but only on a limited basis.

Vibration monitoring, on a daily basis at select locations by professional consultants is available to home owners.  Also, monitors for sound are available for purchase for a reasonable cost.  If damage occurs from excessive vibration and residents want to seek reimbursement for repairs, they are advised to seek assistance from a vibration consultant.  The Montlake Community Club Board will be monitoring compliance with city, state and federal standards by WSDOT and the construction company during the project.  If property owners witness excessive noise or vibratio, they can contact the 24 hour WSDOT hotline phone at (206)708-4657 or by e-mail at sr520bridge@wsdot.wa.gov.

If there are any questions regarding the above information, please contact me at (206) 633-5297 or jdecker@deckerarchitects.com.