Work on rebuilding the bridge over Limekiln Brook on Walnut Hill Road was delayed due to problems with the plan, possibly forcing the work and the detour to wait until the spring.
However, the Department of Energy and Environmental Protection (DEEP) has granted the project an exemption from the Sept. 30 cutoff date, allowing Department of Transportation (DOT) crews to resume work as soon as new plans are approved.
Beginning Monday, crews can continue removing the cofferdam from the creek bed, however further work on the bridge footing will have to wait.
Construction halted earlier this month when workers discovered that the bedrock on one side of the brook was not stable enough to anchor the bridge, according to First Selectman Matthew Knickerbocker.
Engineers with the DOT are working on a plan to drill micropiers into the rock to create support structures for the wing walls.
Representatives from the DOT said a new timeline will be available once the new plans are approved.