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