Drawbridge Operation Regulation; Isthmus Slough at Coos Bay, OR, 36332 [2017-16425]

Download as PDF 36332 Federal Register / Vol. 82, No. 149 / Friday, August 4, 2017 / Rules and Regulations reliability of the remaining system to maintain structural performance, then the provisions of these special conditions must be met, including the provisions of special condition 2 for the dispatched condition, and special condition 3 for subsequent failures. Expected operational limitations may be taken into account in establishing Pj as the probability of failure occurrence for determining the safety margin in Figure 1. Flight limitations and expected operational limitations may be taken into account in establishing Qj as the combined probability of being in the dispatched failure condition and the subsequent failure condition for the safety margins in Figures 2 and 3. These limitations must be such that the probability of being in this combined failure state, and then subsequently encountering limit load conditions, is extremely improbable. No reduction in these safety margins is allowed if the subsequent system-failure rate is greater than 10¥3 per flight hour. Issued in Renton, Washington. Victor Wicklund, Manager, Transport Standards Branch, Aircraft Certification Service. [FR Doc. 2017–16415 Filed 8–3–17; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF HOMELAND SECURITY Coast Guard 33 CFR Part 117 [Docket No. USCG–2017–0715] Drawbridge Operation Regulation; Isthmus Slough at Coos Bay, OR Coast Guard, DHS. Notice of deviation from drawbridge regulation. AGENCY: ACTION: 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 SUMMARY: VerDate Sep<11>2014 13:21 Aug 03, 2017 Jkt 241001 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 d13-pf-d13bridges@uscg.mil. 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 nonfunctioning 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 PO 00000 Frm 00014 Fmt 4700 Sfmt 4700 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] BILLING CODE 9110–04–P DEPARTMENT OF HOMELAND SECURITY Coast Guard 33 CFR Part 117 [Docket No. USCG–2017–0164] Drawbridge Operation Regulation; Willamette River, Portland, OR Coast Guard, DHS. Notice of deviation from drawbridge regulation; modification. AGENCY: ACTION: The Coast Guard has modified a temporary deviation from the operating schedule that governs the Broadway Bridge across the Willamette River, mile 11.7, at Portland, OR. The modified deviation changes the period the bridge may operate the double bascule span one side at a time, single leaf, and reduce the vertical clearance to install and test new equipment. DATES: This modified deviation is effective from 6 a.m. on August 16, 2017 to 6 p.m. on November 13, 2017. ADDRESSES: The docket for this deviation, USCG–2017–0164, 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 d13-pf-d13bridges@uscg.mil. SUPPLEMENTARY INFORMATION: On March 15, 2017, the Coast Guard published a temporary deviation entitled ‘‘Drawbridge Operation Regulation; Willamette River, Portland, OR.’’ in the Federal Register (82 FR 13757). That temporary deviation, from 7 p.m. on May 26, 2017 to 6 a.m. on September 20, 2017, allows the bridge to operate the double bascule span one side at a time, single leaf, to install and test new equipment. The bridge owner, Multnomah County, has requested a modification of the currently published SUMMARY: E:\FR\FM\04AUR1.SGM 04AUR1

Agencies

[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 d13-pf-d13bridges@uscg.mil.

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]
 BILLING CODE 9110-04-P