Jacking Process Underway on Northbound Span of the I-495 Bridge - WBOC-TV 16, Delmarvas News Leader, FOX 21 -

Jacking Process Underway on Northbound Span of the I-495 Bridge

 WILMINGTON Del. - Right on schedule, the slow process of realigning the northbound lanes of the Interstate 498 Bridge in Delaware is underway. The Delaware Department of Transportation says the process being used to realign the northbound lanes is the same one that corrected the southbound lanes of the bridge. However, DelDOT says the process will take longer because the northbound lanes have a more pronounced tilt, causing more stress on the bridge.

Starting Wednesday morning, DelDOT says construction crews began lifting or jacking the individual girders under the bridge just enough to free them from bearing assemblies attached to the existing hammerhead piers. DelDOT says once the girders are free of the bearings and the load is shifted to the temporary support towers, the bridge deck can start to be maneuvered into alignment using jacks and steel shims.

DelDOT says progress during this part of the process is measured in fractions of inches and is expected to take several additional days to complete, assuming all goes well.

DelDOT says once the northbound bridge deck is successfully realigned, steel bracing will be welded into place and the support towers will be anchored to the ground with steel cables. The structure will also be load tested.

DelDOT says they remain optimistic that the work to reopen the northbound lanes of I-495 will be finished before the Labor Day holiday; approximately one month ahead of schedule.

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