[Federal Register Volume 82, Number 149 (Friday, August 4, 2017)]
[Rules and Regulations]
[Page 36332]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-16425]
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DEPARTMENT OF HOMELAND SECURITY
Coast Guard
33 CFR Part 117
[Docket No. USCG-2017-0715]
Drawbridge Operation Regulation; Isthmus Slough at Coos Bay, OR
AGENCY: Coast Guard, DHS.
ACTION: Notice of deviation from drawbridge regulation.
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SUMMARY: The Coast Guard has issued a temporary deviation from the
operating schedule that governs Oregon Department of Transportation's
(ODOT) Isthmus Slough Bridge, mile 1.0 across Isthmus Slough at Coos
Bay, OR. This deviation is necessary to accommodate painting and
preservation and upgrading electrical systems. The deviation allows the
bridge to operate in single leaf mode or one half of the bascule span,
and reduce the vertical clearance of the non-functional leaf.
DATES: This deviation is effective from 6 a.m. on September 1, 2017 to
6 a.m. on February 26, 2018.
ADDRESSES: The docket for this deviation, USCG-2017-0715 is available
at http://www.regulations.gov. Type the docket number in the ``SEARCH''
box and click ``SEARCH.'' Click on Open Docket Folder on the line
associated with this deviation.
FOR FURTHER INFORMATION CONTACT: If you have questions on this
temporary deviation, call or email Mr. Danny McReynolds, Bridge
Management Specialist, Thirteenth Coast Guard District; telephone 206-
220-7234, email [email protected].
SUPPLEMENTARY INFORMATION: ODOT, bridge owner, has requested a
temporary deviation from the operating schedule for the Isthmus Slough
Bridge, mile 1.0 across Isthmus Slough at Coos Bay, OR. The requested
deviation is to accommodate painting and preservation and upgrading
electrical systems. To facilitate this event, the double bascule bridge
will operate in single leaf mode (half of the span), and reduce the
vertical clearance of the non-functioning leaf. Isthmus Slough Bridge
provides a vertical clearance of 28 feet in the closed-to-navigation
position referenced to the vertical clearance above mean high water
tide level. Ten feet of containment will be installed under the closed-
to-navigation leaf only, and will reduce the vertical clearance to 18
feet. Vessels that do not require an opening may transit under the
bridge at any time.
The normal operating schedule for the subject bridge is 33 CFR
117.879. This deviation allows the Isthmus Bridge to operate in single
leaf, half opening, and reduce the vertical clearance of the non-
functioning leaf by 10 feet to 18 feet; and need not open for maritime
traffic from 6 a.m. on September 1, 2017 to 6 a.m. on February 26,
2018. The functional bascule leaf shall open on signal if at least 24
hours notice is given. Waterway usage on Isthmus Slough includes
vessels ranging from small commercial tugs, commercial fishing vessels,
police search and rescue to small pleasure craft.
Vessels able to pass through the bridge in the closed-to-navigation
position may do so at any time. The bridge will be able open half of
the double bascule in single leaf mode for emergencies as soon as
possible, and there is no immediate alternate route for vessels to
pass. The Coast Guard will inform the users of the waterway, through
our Local and Broadcast Notices to Mariners, of the change in operating
schedule for the bridges so that vessels can arrange their transits to
minimize any impact caused by the temporary deviation.
In accordance with 33 CFR 117.35(e), the drawbridge must return to
their regular operating schedule immediately at the end of the
effective period of this temporary deviation. This deviation from the
operating regulations is authorized under 33 CFR 117.35.
Dated: July 25, 2017.
Steven Michael Fischer,
Bridge Administrator, Thirteenth Coast Guard District.
[FR Doc. 2017-16425 Filed 8-3-17; 8:45 am]
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