Daily Rules, Proposed Rules, and Notices of the Federal Government
The Oregon Department of Transportation has requested that the Interstate 5 Bridges which cross the Columbia River at mile 106.5 only be required to lift to a reduced height of 130 feet above Columbia River Datum for a 30 day period. The height restricted lifts are necessary to facilitate heavy maintenance on the bridges lift-spans. The I-5 Bridges cross the Columbia River at mile 106.5 and provide three designated navigation channels with vertical clearances ranging from 39 to 72 feet above Columbia River Datum while the lift spans are in the closed position. Vessels which do not require a full bridge opening may continue to transit beneath the bridges during this maintenance period. Under normal operation the bridges are governed by 33 CFR 117.869, which requires that the draws open fully and promptly on signal except that the draws need not open from 6:30 a.m. to 9 a.m. and from 2:30 p.m. to 6 p.m. Monday through Friday excluding federal holidays. The lift-spans when fully opened provide 178 feet of vertical clearance above Columbia River Datum. This deviation period is from 7 a.m. on September 15, 2012 through 6 p.m. October 14, 2012. The deviation allows the lift spans of the I-5 Bridges across the Columbia River, mile 106.5, to be raised to a reduced height of 130 feet above Columbia River Datum from 7 a.m. on September 15, 2012 through 6 p.m. October 14, 2012. Scaffolding will be attached to the bridge during this maintenance evolution which will restrict the height the lift-spans can be raised. Lift heights greater than 130 feet above Columbia River Datum will not be capable during this maintenance period from September 15, 2012 until October 14, 2012. The bridge shall operate in accordance with 33 CFR 117.869 at all other times. Waterway usage on this stretch of the Columbia River includes vessels ranging from commercial tug and tow vessels to recreational pleasure craft. Mariners will be notified and kept informed of the bridge's operational status via the Coast Guard Notice to Mariners publication.
In accordance with 33 CFR 117.35(e), the drawbridges must return to their 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.