US Coast Guard LNM - Great Lakes District (D9)
US · 110 in force · 3 new this week · 86 archived · updated 11 Nov 2026, 19:04 UTC · page 2 of 3
- WEST END OF LAKE ERIE - ISLANDS IN LAKE ERIE General / Bridges / Maintenance From July 6 through July 9, 2026, between the hours of 0600 and 2000, daily, the Norfolk Southern Railroad Bridge at Mile 1.5 over the Portage River will require a 4-hour advance notice for openings due to maintenance. Mariners should provide advance notice directly to the drawtender. Position 41-30.93N 082-57.82W USCG Great Lakes District Local Notice to Mariners 45/2026
- MANISTEE - MANITOWOC HARBOR OF REFUGE General / Bridges / Temp Deviation WI - LAKE MICHIGAN – Manitowoc Harbor From April 1 through November 30, Monday through Friday, the 8th Street Bridge at Mile 0.29 and the Tenth Street Bridge, mile 0.43, over the Manitowoc River, need not open from 7 a.m. to 8 a.m., and 11 a.m. to noon, and again from 4 p.m. to 5 p.m., except weekends and federal holidays. From 10 p.m. to 4 a.m., the bridges will open on signal if provided a 2-hour advance notice of arrival. There is a control house at each bridge allowing one drawtender to operate one or both bridges remotely. The bridges are required to maintain and operate a radiotelephone, and a two-way public address system capable of responding to sound signals or voice communications between the operator and vessels. [07MAY26] Position 44-05.52N 087-39.63W USCG Great Lakes District Local Notice to Mariners 45/2026
- KEWEENAW UPPER ENTRANCE - KEWEENAW WATERWAY General / Bridges / Maintenance WI - LAKE SUPERIOR – Kewanee Waterway From December 15, 2027, through April 15, 2028, and again From December 15, 2028, through April 15, 2029, the US 41 Bridge at Mile 16.0 over the Keweenaw Waterway will be secured to masted navigation for maintenance. Vessels able to pass under the bridge without an opening may do so at any time. A 190-foot by 80-foot barge or smaller will be working at the bridge from 0600 to 1900 daily, the barge will monitor VHF-Fm marine channel 16 and will move if provided a 3-hour advance notice. [37/25] Position 47-07.42N 088-34.43W USCG Great Lakes District Local Notice to Mariners 45/2026
- SAGINAW BAY CHANNEL - SAGINAW RIVER General / Bridges / Rehabilitation *****REVISED***** MI - LAKE HURON – Saginaw River From December 1, 2026, through March 31, 2027, the Lafayette Street Bridge at Mile 6.78, over the Saginaw River will be secured to masted navigation. Vessels able to pass under the bridge without an opening may do so at any time. Currently, six barges 80x190-foot or smaller will be working under the bridge, and they will move if a 3-hour advance notice is provided by calling 608-475-8851, or 608-610-9374, or 989-293-5892. Trestles will be installed extending outward from shore approximately 50 feet. Flashing yellow lights will warn mariners of the trestle’s location. Heel girders will be installed on the four corners of the bridge to enable the new drawspan to be opened during construction. These girders will extend an additional 2 feet into the channel reducing the horizontal clearance to approximately 136-feet. During the winter, the ice will degrade due to the movement of barges and the ice under the bridge should be considered unsafe for pedestrians or vehicles. [30/24] [44/24] [48/24] [8/24] [11/25] [20JAN26] [05 FEB 26] [30JUN26] Position 43-34.78N 083-53.98W USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE MICHIGAN - MILWAUKEE General / Bridges / Lighting and Other Signals WI - LAKE MICHIGAN – Milwaukee Harbor The Coast Guard has received a report that the upper navigation lights on the Union Pacific Railroad Bridge at Mile 1.19 over the Menomonie River are extinguished. [15JUL26] Position 43-00.82N 087-54.25W USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE ONTARIO - ROCHESTER HARBOR General / Bridges / Construction NY - NEW YORK STATE CANAL SYSTEM - Erie Canal From September 8, 2026, through September 21, 2027, between the hours of 0600 and 1800 daily, two barges, 40-feet by 32-feet will be replacing the E-163, Chili Avenue (NY33A) Bridge at Mile 262.3, over the Erie Canal. The barges will move with 2-hour notice by hailing them on VHF-FM Marine Channel 16 or by calling 585-813-1415. A temporary pedestrian bridge will be installed adjacent to the construction area. All temporary reductions in vertical clearances over the canal will be marked with steady burning yellow lights and any horizontal reduction in clearance will be marked with steady burning red lights until the permanent navigation lights can be installed. [15JUL26] Position 43-08.42N 077-39.95W USCG Great Lakes District Local Notice to Mariners 45/2026
- MUNUSCONG LAKE - WEST NEEBISH CHANNEL DOWNBOUND General / Miscellaneous Location: 46-19.32N 084-11.79W West Neebish Channel (Downbound) Upper Range Rear Light (LLNR 13475) is currently being rebuilt and is temporarily disestablished. Significant site work is taking place and the legacy tower has been demolished. The anticipated project completion date is December 2026. Future updates to this operation will be contained within this notice. Mariners are urged to use caution while transiting the area. Valid 2026-09-23 to 2027-03-22. USCG Great Lakes District Local Notice to Mariners 45/2026
- DETROIT RIVER - LAKE ST. CLAIR General / Marine Events / Regatta (Race) Lake St. Clair – Bayview Yacht Club - New Baltimore Race Mariners are advised that the Bayview Yacht Club - New Baltimore Sailboat Race will be held on June 13, 2026 1200 - 2200. The event will take place in the vicinity of New Baltimore, MI . Mariners are urged to transit the area with caution. Position 42-37.75N 082-45.12W USCG Great Lakes District Local Notice to Mariners 45/2026
- WEST END OF LAKE ERIE - VERMILION General / Bridges / Inspection OH - LAKE ERIE – Vermilion Harbor On September 1, 2026, between the hours of 0900 and 1600, inspectors will be using a 25-foot inspection vessel under the Liberty Avenue Bridge (ROUTE 6) at Mile 0.7 over the Vermilion River. The vessel will monitor VHF-FM marine Channel 16 and move to accommodate other vessels with a 15-minute advance notice of arrival. [19AUG26] USCG Great Lakes District Local Notice to Mariners 45/2026
- SAGINAW BAY CHANNEL - SAGINAW RIVER General / Bridges / Inspection On August 24 and August 25, 2026, between the hours of 0800 and 1600 each day, divers will be inspecting the underwater portions of the Genesee Avenue Bridge at Mile 18.65, over the Saginaw River. Spotters will warn them of approaching vessels and move the divers to allow vessels to pass. Position 43-26.02N 083-56.48W USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE MICHIGAN - INDIANA HARBOR General / Bridges / Repairs, Painting, Or Fender Replacement The Coast Guard has received a report that the bridge fendering is damaged near the Norfolk Southern Railroad Bridge at Mile 0.72 over the Indiana Harbor Canal. Mariners should use caution when transiting the area. [48/24] Position 41-39.60N 087-27.13W USCG Great Lakes District Local Notice to Mariners 45/2026
- CELERON ISLAND - TRENTON CHANNEL General / Bridges / Inspection On August 19 and August 20, 2026, between the hours of 0800 and 1700 each day, divers will be inspecting the under water portions of the Grosse Ile Parkway (Free) Bridge, at mile 5.60 over the Detroit River. Spotters will warn inspectors of approaching vessels and will move the divers to allow vessels to pass. Position 42-07.65N 083-10.53W USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE HURON - LAKE MICHIGAN General / Bridges / Rehabilitation WI - LAKE MICHIGAN – Racine Harbor From November 1, 2027, through March 31, 2028, the State Street Bridge at mile 0.53 over the Root River will be secured to masted navigation. Vessels able to pass under the bridge without an opening may do so at any time. [21JUL26] Position 42-43.90N 087-47.15W USCG Great Lakes District Local Notice to Mariners 45/2026
- MAUMEE BAY - MAUMEE RIVER General / Bridges / Maintenance OH - LAKE ERIE – Toledo Harbor From March 1, 2026, through July 1, 2028, scaffolding will be installed under the Ohio Turnpike Bridges at Mile 11.42, over the Maumee River that hangs approximately 7-feet below low steel. [27/25] Position 41-34.83N 083-36.42W USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE MICHIGAN - RACINE General / Bridges / Rehabilitation WI - LAKE MICHIGAN – Racine Harbor From November 1, 2028, through March 31, 2029, the Main Street Bridge at mile 0.31, and the State Street Bridge at mile 0.53 over the Root River will be secured to masted navigation. Vessels able to pass under the bridge without an opening may do so at any time. [13AUG26] Position 44-00.80N 088-32.27W USCG Great Lakes District Local Notice to Mariners 45/2026
- LNM09-9448B7SÉCURITÉPORT HURON TO PTE AUX BARQUES - ST. CLAIR RIVER General / Marine Events / Fireworks The U.S. Coast Guard is establishing a safety zone on the St. Clair River for drone show display on July 16, 2026. all U.S. waters of the St. Clair river within a 200 yard radius of the fireworks launch site located in the vicinity of Kiefer park, Port Huon, MI, at position 42-58.846’N, 082-25.201’W will be closed to traffic from 10 p.m. to 10:30 p.m. in case of an emergency related to the Bluewater festival, the local Coast Guard station and Coast Guard Sector Detroit may be contacted on channel 16 VHF/FM. Position 42-58.78N 082-25.18W USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE MICHIGAN - CHICAGO HARBOR General / Marine Events / Fireworks Navy Pier Summer Series Fireworks from 2200-2230 Position 41-53.50N 087-35.88W USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE MICHIGAN - RACINE General / Bridges / Rehabilitation WI - LAKE MICHIGAN – Racine Harbor From November 1, 2028, through March 31, 2029, the Main Street Bridge at mile 0.31, and the State Street Bridge at mile 0.53 over the Root River will be secured to masted navigation. Vessels able to pass under the bridge without an opening may do so at any time. [13AUG26] Position 42-43.90N 087-47.15W USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE MICHIGAN - CHICAGO HARBOR General / Bridges / Rehabilitation *****REVISED***** IL - LAKE MICHIGAN – Chicago Harbor From August 15, 2025, through December 1, 2026, the Lake Street Bridge at Mile 1.64 (CORPS MILE 325.5) over the South Branch of the Chicago River, will be replaced, one leaf at a time. One half of the channel will be open to navigation without any equipment with a fully operational bridge leaf. The leaf of the bridge being replaced will be secured to masted navigation and will have six barges 120-feet by 80-feet or smaller working near or under the secured leaf. The contractor will display temporary steady burning yellow lights on the bottom and four-corners of the bridge leaves until the permanent bridge lighting can be established. Any equipment moving near mid-channel or in the unaffected side of the channel should be passed with standard agreements in accordance with the Navigation Rules. [16/25] [26/25] Position 41-53.15N 087-38.27W USCG Great Lakes District Local Notice to Mariners 45/2026
- WEST END OF LAKE ERIE - DETROIT RIVER General / Bridges / Construction *****REVISED***** MI – DETROIT RIVER – River Rouge From May 18 through May 28, 2026, the Del Ray Connecting Railroad Bridge at Mile 0.34 over the River Rouge Old Channel will be secured to masted navigation for maintenance. Vessels able to pass under the bridge without opening may do so at any time. [22APR26] [20 MAY 26] Position 42-17.38N 083-07.10W USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE ST. CLAIR - LAKE ST CLAIR General / Bridges / Temp Deviation MI – ST CLAIR RIVER –Port Huron On July 15, 2026, between the hours of 1815 and 2100 the Military Street Bridge at Mile 0.33, the 7th Street Bridge at Mile 0.50, and 10th Street Bridge at Mile 0.94, over the Black River will be secured to masted navigation except for intermittent openings in conjunction with the Rotary International Parade. Vessels able to pass under the bridges may do so at any time. [07 JUL 26] Position 42-58.53N 082-25.45W USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE MICHIGAN - INDIANA HARBOR General / Bridges / Maintenance IN - LAKE MICHIGAN – Indiana Harbor Canal From July 15 through December 18, 2026, beginning at noon on Mondays and Thursdays and continuing for period of 24-hours,a 60-foot by 60-foot rail barge will be in the draw of the Elgin, Joliet, and Eastern Railroad Bridge at Mile 1.89, of the Indiana Harbor Canal. A weekly meeting will be hosted by Canadian National ([email protected]) and local stakeholders. If foul Weather prohibits the movement of barges along the south shore of Lake Michigan the stakeholders will vote to pause the barge placement to allow for the reasonable needs of navigation. [07JUL26] [02SEP26] Position 41-43.72N 087-32.37W USCG Great Lakes District Local Notice to Mariners 45/2026
- MANISTEE - MANITOWOC HARBOR OF REFUGE General / Bridges / Temp Deviation WI - LAKE MICHIGAN – Manitowoc Harbor From April 1 through November 30, Monday through Friday, the 8th Street Bridge at Mile 0.29 and the Tenth Street Bridge, mile 0.43, over the Manitowoc River, need not open from 7 a.m. to 8 a.m., and 11 a.m. to noon, and again from 4 p.m. to 5 p.m., except weekends and federal holidays. From 10 p.m. to 4 a.m., the bridges will open on signal if provided a 2-hour advance notice of arrival. There is a control house at each bridge allowing one drawtender to operate one or both bridges remotely. The bridges are required to maintain and operate a radiotelephone, and a two-way public address system capable of responding to sound signals or voice communications between the operator and vessels. [07MAY26] Position 44-05.53N 087-39.47W USCG Great Lakes District Local Notice to Mariners 45/2026
- SUPERIOR FRONT CHANNEL - DULUTH HARBOR General / Bridges / Maintenance MN- LAKE SUPERIOR – Duluth-Superior Harbor From January 15, 2026, through March 23, 2026, and again from January 15, 2027, through March 23, 2027, and again from January 15, 2028, through March 23, 2028, the Duluth Ship Canal Bridge at mile 0.24 over the Duluth Ship Canal will be secured to masted navigation for maintenance, vessels able to pass under the bridge without an opening may do so at any time. Position 46-46.73N 092-05.57W USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE MICHIGAN - WAUGOSHANCE POINT TO SEUL CHOIX POINT General / Miscellaneous Location: 45-41.12N 085-30.03W Temporary surface Buoy 49” round with fixed white light marking exit location of a fiber optic 5” conduit. Valid 2026-09-11 to 2027-05-15. USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE MICHIGAN - WAUGOSHANCE POINT TO SEUL CHOIX POINT General / Miscellaneous Location: 45-55.18N 085-54.07W Temporary surface Buoy 23” round with fixed white light marking exit location of a fiber optic 5” conduit. Valid 2026-09-11 to 2027-05-15. USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE MICHIGAN - WAUGOSHANCE POINT TO SEUL CHOIX POINT General / Miscellaneous Location: 45-45.54N 085-32.43W Temporary surface Buoy 49” round with fixed white light marking exit location of a fiber optic 5” conduit. Valid 2026-09-11 to 2027-05-15. USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE HURON - LAKE MICHIGAN General / Miscellaneous Location: 45-19.13N 085-16.92W Temporary surface Buoy 23” round with fixed white light marking exit location of a fiber optic 5” conduit. Valid 2026-09-11 to 2027-05-15. USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE HURON - LAKE MICHIGAN General / Hazards To Navigation / Wrecks Location: 42-38.14N 086-15.85W Report of a vessel partially submerged approximately 10' under the water, southwest of Saugatuck, MI, 3.7nm Southwest of the entrance to the Kalamazoo River. A white fender is attached to the vessel and floating o the waters surface. All mariners are requested to transit the area with caution. Valid 2026-09-09 to 2027-03-08. USCG Great Lakes District Local Notice to Mariners 45/2026
- ST. LAWRENCE SEAWAY General / Miscellaneous Location: 44-21.47N 075-59.75W Buoy H15/1 temporarily established at 44 21.471N 075 59.754W. Buoy is green with flashing characteristics Q G 1s. Valid 2026-09-03 to 2027-03-02. USCG Great Lakes District Local Notice to Mariners 45/2026
- LNM09-5852FCSÉCURITÉLAKE HURON - PORT SANILAC General / Marine Construction (Excluding Bridges) / Dredging Dredging the Port Sanilac Harbor Federal channel. Submerged pipe lying on the lake floor marked by orange round buoys every 1,000 feet. (2) white buoys will be seen North and South of the dredge. The white buoys indicate winch anchor locations. The disposal area starts South of the South breakwater 4,500’ and goes an additional 5,700’ Southward. Placement will be between the Ordinary High Watermark (Beach) to the 8’ depth contour. The disposal area will be marked with white buoys on each corner. The main contact will be Superintendent Joseph Martin. Cell# listed below. During rough seas our pipe pontoon will be floating outside of the channel. It is bright yellow, 25’x8’x6’ and has (2) flashing amber lights on each end that come on at night. Another pipe pontoon that is bright yellow (25’x8’x6’) and has (2) flashing amber lights on each end will be in the disposal area Valid 2026-09-01 to 2026-11-15. Position 43-25.82N 082-32.10W USCG Great Lakes District Local Notice to Mariners 45/2026
- LNM09-2ACF0ASÉCURITÉWEST END OF LAKE ERIE - MONROE HARBOR General / Marine Construction (Excluding Bridges) / Dredging Location: Monroe Harbor, MI turning basin to nav channel Valid 2026-08-29 to 2026-11-30. USCG Great Lakes District Local Notice to Mariners 45/2026
- LNM09-3BD6BASÉCURITÉWEST END OF LAKE ERIE - BOLLES HARBOR General / Marine Construction (Excluding Bridges) / Dredging Location: Bolles Harbor, MI (LaPlaisance Creek from turning basin to end of nav channel) Valid 2026-08-28 to 2026-11-30. USCG Great Lakes District Local Notice to Mariners 45/2026
- LNM09-27DC3DSÉCURITÉLAKE MICHIGAN - MANISTIQUE General / Marine Construction (Excluding Bridges) / Dredging Dredging the Manistique Harbor Federal channel. Submerged pipe lying on the lake floor marked by orange round buoys every 1,000 feet. (2) white buoys will be seen North and South of the dredge. The white buoys indicate winch anchor locations. The disposal area starts right on the west side of the West breakwater and goes an additional 6,200’ westward. Placement will be between the 4’ depth contour to the 10’ depth contour. The disposal area will be marked with white ball buoys on each corner. The main contact will be Superintendent Rob Lister. Cell# listed below. During rough seas, our pipe pontoon will be floating outside of the channel. It is bright yellow, 25’x8’x6’ and has (2) flashing amber lights on each end that come on at night. Another pipe pontoon that is bright yellow 25’x8’x6’ and has (2) flashing amber lights on each end will be in the disposal area. Valid 2026-08-21 to 2026-12-05. Position 45-56.62N 086-14.97W USCG Great Lakes District Local Notice to Mariners 45/2026
- LNM09-4068DASÉCURITÉLAKE MICHIGAN - PLATTE BAY TO LELAND General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Location: 45-07.30N 085-58.28W Valid 2026-08-21 to 2026-11-20. USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE ERIE - CLEVELAND HARBOR General / Miscellaneous Location: 41-32.57N 081-39.08W A temporary buoy will be deployed at this location for scientific data collection within Cleveland Harbor. The spar buoy will be lighted with a Fl Y 4s light. Mariners are urged to use caution while transiting the area. Valid 2026-07-28 to 2026-12-01. USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE ERIE - GORDON PARK General / Miscellaneous Location: 41-32.54N 081-38.16W A temporary buoy will be deployed at this location for scientific data collection within Cleveland Harbor. The spar buoy will be lighted with a Fl Y 4s light. Mariners are urged to use caution while transiting the area Valid 2026-07-28 to 2026-12-01. USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE ERIE - CLEVELAND HARBOR General / Miscellaneous Location: 41-32.54N 081-38.16W A temporary buoy will be deployed at this location for scientific data collection within Cleveland Harbor. The spar buoy will be lighted with a Fl Y 4s light. Mariners are urged to use caution while transiting the area. Valid 2026-07-28 to 2026-12-01. USCG Great Lakes District Local Notice to Mariners 45/2026
- LNM09-94E39ESÉCURITÉNIAGARA RIVER - LAKE ERIE General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes There will be maintenance performed on ice boom anchor cables by a tug and crane barge on Lake Erie between Buffalo Outer Harbor and Fort Erie from July 13, 2026 to August 2, 2026. Mariners are advised to use caution when transiting near the work area and remain 100 yards from the barge when possible. For further information, please contact 716-243-6617. Valid 2026-07-13 to 2027-01-08. USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE MICHIGAN - MICHIGAN CITY General / Hazards To Navigation / Shoaling Reported Location: 41-43.63N 086-54.63W Description: The Coast Guard has been notified of significant shoaling on the western side of the Michigan City Harbor Channel in vicinity of Michigan City West Pierhead Light (LLNR 19565). In response, the Coast Guard has temporarily deployed two red buoys, Michigan City Shoal Lighted Buoy 2 and Michigan City Shoal Buoy 4, to mark the furthest encroachment of the shoaling. Michigan City Shoal Lighted Buoy 2 has a QR characteristic and should be used as the primary starboard hand mark when entering the harbor channel. In an effort to prevent confusion, Michigan City West Pierhead Light (LLNR 19565) has been temporarily disestablished until dredging can be completed. Mariners are urged to use caution when transiting the area and are discouraged from transiting inside the temporary buoys and west pierhead. Valid 2026-06-24 to 2026-12-21. USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE MICHIGAN - MICHIGAN CITY General / Miscellaneous Location: Michigan City Harbor Description: The Coast Guard has been notified of significant shoaling on the western side of the Michigan City Harbor Channel in vicinity of Michigan City West Pierhead Light (LLNR 19565). In response, the Coast Guard has temporarily deployed two red buoys, Michigan City Shoal Lighted Buoy 2 and Michigan City Shoal Buoy 4, to mark the furthest encroachment of the shoaling. Michigan City Shoal Lighted Buoy 2 has a QR characteristic and should be used as the primary starboard hand mark when entering the harbor channel. In an effort to prevent confusion, Michigan City West Pierhead Light (LLNR 19565) has been temporarily disestablished until dredging can be completed. Mariners are urged to use caution when transiting the area and are discouraged from transiting inside the temporary buoys and west pierhead. Valid 2026-06-24 to 2027-01-01. USCG Great Lakes District Local Notice to Mariners 45/2026
- LNM09-70028ASÉCURITÉLAKE SUPERIOR - APOSTLE ISLANDS General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Mariners are advised that Kokosing Industrial, Inc. – Marine Great Lakes is conducting marina rehabilitation operations at Little Sand Bay Marina, Wisconsin. This is an extension of previous work. Operations will take place from October 1, 2026 through November 15, 2026, daily from 0700 to 1900 (Monday through Sunday). The Tug General, along with barges MM 142 and DB12, will be working on spuds within the marina. Operations will be located primarily within 500 feet of the marina. Additional barges may be moored to an anchor can buoy located northwest of Little Sand Bay Marina at coordinates 46° 56' 56.24" N, 090° 53' 40.21" W. All barges and mooring buoys will be properly marked and lighted in accordance with U.S. Coast Guard regulations. Mariners are requested to use caution when transiting the area, maintain a safe distance from all work vessels and equipment, and proceed at a reduced speed. For further information, contact Nick Howery at (231) 420-1104. Valid 2026-05-10 to 2026-11-15. Position 46-56.87N 090-53.57W USCG Great Lakes District Local Notice to Mariners 45/2026
- LNM09-FF1348SÉCURITÉLAKE HURON - SAGINAW BAY General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Location: 43-44.17N 083-27.64W Hardman Construction is conducting steel sheet pile and embankment work along the south shore of the Sebewaing River in Sebewaing, MI. Operations are scheduled to conclude on November 27, 2026. Standard work hours are Monday through Friday from 7:00 AM to 5:00 PM, with Saturday operations occurring on an as-needed basis. The project does not employ any temporary aids to navigation or buoys, and no VHF channels are actively monitored by the work crews. Mariners are advised to use extra caution and transit at a slow speed when approaching the stretch of the Sebewaing River between the Sebewaing River Railroad Bridge and the N Center Street Bridge. For additional information, mariners may contact Dave DeClerck at 231-852-4011. Valid 2026-05-06 to 2026-11-27. USCG Great Lakes District Local Notice to Mariners 45/2026
- LNM09-02B265SÉCURITÉLAKE HURON - LAKE MICHIGAN General / Marine Construction (Excluding Bridges) / Dredging Kokosing Industrial will be conducting Dock Construction and Dredging at NE Side of North Manitou Island, West of Leland, MI from 0700-1900 7 days a week. Tug WM Boyd can be contacted on vhf channels 13 and 16. Kokosing IV barge will be working on spuds with Tug WM Boyd within 750' of the island Operations primarily located on the NE side of North Manitou Island Pleasure craft and passing vessels should remain a safe distance from the work at all times. Additional barges will be moored on anchor buoys on the East side of the Island Anchor Buoy Coordinates N 45°07'4.98" W 85°58'27.54" and N 45°07'1.98" W 85°58'27.12" Valid 2026-05-03 to 2026-12-31. Position 45-01.52N 085-46.07W USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE ST. CLAIR - ST. CLAIR CUT-OFF CHANNEL ATON / Advanced Notice of Change Location: 42-30.98N 082-41.37W Aid Name: St. Clair Cut-Off Channel Preferred Channel Lighted Buoy CO LLNR: 8590 Action: CHANGE Action Type Change Aid Subtype Description: The Coast Guard will be replacing the lighted steel buoy and associated seasonal winter mark with a year-round spar buoy. The buoy hull will remain on station year-round, with the lantern seasonally removed during the winter months versus replacement with a steel ice hull. While the change will marginally reduce the visual and radar range of the physical hull, the benefits of greater flexibility in availability of a lighted signal in nearshore areas and the proximity of fixed aids to navigation, were taken into consideration. The lighted characteristics of the aid and the assigned seasonal dates published in the Light List will remain unchanged. Any questions or comments can be sent to Mr. Brian Hawkins, the Federal Aids to Navigation Manager at the Coast Guard Great Lakes District via email at [email protected]. Valid 2026-04-28 to 2027-01-01. USCG Great Lakes District Local Notice to Mariners 45/2026
- LNM09-E66431SÉCURITÉPORT HURON TO PTE AUX BARQUES - ST. CLAIR RIVER ATON / Advanced Notice of Change Location: 42-40.93N 082-30.20W Aid Name: Fawn Island Lighted Buoy 38 LLNR: 9780 Action: CHANGE Action Type Change Aid Subtype Description: The Coast Guard will be replacing the lighted steel buoy and associated seasonal winter mark with a year-round spar buoy. The buoy hull will remain on station year-round, with the lantern seasonally removed during the winter months versus replacement with a steel ice hull. The change provides both greater flexibility in the seasonal availability of a lighted signal, but also an improved radar signature during unlit off-season periods. The lighted characteristics of the aid and the assigned seasonal dates published in the Light List will remain unchanged. Any questions or comments can be sent to Mr. Brian Hawkins, the Federal Aids to Navigation Manager at the Coast Guard Great Lakes District via email at [email protected]. Valid 2026-04-28 to 2027-01-01. USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE ST. CLAIR - ST. CLAIR CUT-OFF CHANNEL ATON / Advanced Notice of Change Location: 42-33.09N 082-35.45W Aid Name: St. Clair Cut-Off Channel Lighted Buoy 13 LLNR: 8655 Action: CHANGE Action Type Change Aid Subtype Description: The Coast Guard will be replacing the lighted steel buoy with a year-round spar buoy. The buoy hull will remain on station year-round, with the lantern seasonally removed during the winter months versus complete removal of the buoy. The change provides both greater flexibility in the seasonal availability of a lighted signal, but will also provide a physical buoy during off-season periods. The lighted characteristics of the aid and the assigned seasonal dates published in the Light List will remain unchanged. Any questions or comments can be sent to Mr. Brian Hawkins, the Federal Aids to Navigation Manager at the Coast Guard Great Lakes District via email at [email protected]. Valid 2026-04-28 to 2027-01-01. USCG Great Lakes District Local Notice to Mariners 45/2026
- LNM09-180809SÉCURITÉABOVE FIGHTING ISLAND - FLEMING CHANNEL ATON / Advanced Notice of Change Location: 42-21.17N 082-55.96W Aid Name: Peche Island Lighted Buoy 114 LLNR: 8255 Action: CHANGE Action Type Change Aid Subtype Description: The Coast Guard will be replacing the lighted steel buoy and associated seasonal winter mark with a year-round spar buoy. The buoy hull will remain on station year-round, with the lantern seasonally removed during the winter months versus replacement with a steel ice hull. The change provides both greater flexibility in the seasonal availability of a lighted signal, but also an improved radar signature during unlit off-season periods. The lighted characteristics of the aid and the assigned seasonal dates published in the Light List will remain unchanged. Any questions or comments can be sent to Mr. Brian Hawkins, the Federal Aids to Navigation Manager at the Coast Guard Great Lakes District via email at [email protected]. Valid 2026-04-28 to 2027-01-01. USCG Great Lakes District Local Notice to Mariners 45/2026
- LAKE ST. CLAIR - ST. CLAIR CUT-OFF CHANNEL ATON / Advanced Notice of Change Location: 42-30.92N 082-41.16W Aid Name: St. Clair Cut-Off Channel Lighted Buoy 32 LLNR: 8600 Action: CHANGE Action Type Change Aid Subtype Description: The Coast Guard will be replacing the lighted steel buoy and associated seasonal winter mark with a year-round spar buoy. The buoy hull will remain on station year-round, with the lantern seasonally removed during the winter months versus replacement with a steel ice hull. While the change will marginally reduce the visual and radar range of the physical hull, the benefits of greater flexibility in availability of a lighted signal in nearshore areas and the proximity of fixed aids to navigation, were taken into consideration. The lighted characteristics of the aid and the assigned seasonal dates published in the Light List will remain unchanged. Any questions or comments can be sent to Mr. Brian Hawkins, the Federal Aids to Navigation Manager at the Coast Guard Great Lakes District via email at [email protected]. Valid 2026-04-28 to 2027-01-01. USCG Great Lakes District Local Notice to Mariners 45/2026
- DETROIT RIVER - LAKE ST. CLAIR ATON / Advanced Notice of Change Location: 42-21.90N 082-53.87W Aid Name: Lake St. Clair Lighted Buoy 2 LLNR: 8420 Action: CHANGE Action Type Change Aid Subtype Description: The Coast Guard will be replacing the lighted steel buoy and associated seasonal winter mark with a year-round spar buoy. The buoy hull will remain on station year-round, with the lantern seasonally removed during the winter months versus replacement with a steel ice hull. While the change will marginally reduce the visual and radar range of the physical hull, the benefits of greater flexibility in availability of a lighted signal in nearshore areas and the proximity of fixed aids to navigation, were taken into consideration. The lighted characteristics of the aid and the assigned seasonal dates published in the Light List will remain unchanged. Any questions or comments can be sent to Mr. Brian Hawkins, the Federal Aids to Navigation Manager at the Coast Guard Great Lakes District via email at [email protected]. Valid 2026-04-28 to 2027-01-01. USCG Great Lakes District Local Notice to Mariners 45/2026