Daily Rules, Proposed Rules, and Notices of the Federal Government
The Northern Avenue Bridge, across the Fort Point Channel, mile 0.1, has a vertical clearance in the closed position of 7 feet at mean high water and 17 feet at mean low water. The existing drawbridge operation regulations are listed at 33 CFR 117.599.
The waterway has seasonal recreational vessels of various sizes.
The owner of the bridge, the City of Boston, requested a temporary deviation to facilitate the replacement of deck support. The bridge cannot open while the stringers are unsecured. A six-hour advance notice for bridge openings was requested to allow sufficient time to safely open the bridge.
Under this temporary deviation the Northern Avenue Bridge, mile 0.1, across the Fort Point Channel may require a six-hour advance notice for bridge openings between 11 p.m. and 9 a.m. from September 16, 2012 through September 20, 2012. Vessels that can pass under the bridge without a bridge opening may do so at all times. There are no alternate routes available for navigation. The bridge cannot open for an emergency while any steel remains unsecured.
In accordance with 33 CFR 117.35(e), the bridge must return to its regular operating schedule immediately at the end of the designated time period. This deviation from the operating regulations is authorized under 33 CFR 117.35.