Duck Key Bridge Updates

1/28 Update: American Empire Builders (AEB) formed and poured the concrete footers for the MSE wall on the east end of the Bimini Bridge and is currently setting the panels. Next week, AEB will mobilize equipment to the west end of the bridge to install the sheet pile wall and concrete piles along the canal on that side. Vibration monitoring is being performed during the work as required by project specifications. All readings have been within allowable levels.    

FKAA’s pipeline contractor completed the tie-in of the sewer and reclaimed water lines and is working on the waterline. 

The strengthened east lane of Harbour Drive Bridge opened with reduced weight restrictions lifted in November. AEB formed and poured a concrete wall between the existing bridge columns in the west lane at the south end, set the new steel beams, and is currently installing the timber deck. Once the west lane is completed and opened to traffic, the contractor will strengthen the concrete wall under the east lane as well. This work will necessitate a brief shift of two-way traffic from the east lane to the west lane while the contractor performs the work. The additional work to repair the end bent resulted in the expected completion of the strengthened west lane, additional work in the east lane, and full opening of Harbour Drive Bridge to be moved to the second week in February 2022.   

The contractor completed the strengthening work on Seaview Bridge and opened both lanes up to traffic in December 2021. FKAA’s contractor has material on-site and plans to mobilize to perform subaqueous installation of the water, sewer, and reclaimed lines at Seaview Drive Bridge in the next two weeks. Upon completing the utility work at Seaview, FKAA plans to move to Harbour Drive bridge to perform subaqueous installation there.

1/18 Update: American Empire Builders (AEB) completed the installation of the sheet pile wall and three concrete piles for the end bent on the east end of the Bimini Bridge and is working to form and pour the concrete footers for the MSE wall on the east end. Within the next two weeks, AEB will mobilize equipment to the west end of the bridge to install sheet pile walls and concrete piles along the canal on that side.    Vibration monitoring is being performed during the work as required by project specifications. All readings have been within allowable levels.

FKAA’s pipeline contractor submitted maintenance of traffic plans for the final tie-in of the lines at Bimini and is performing the tie-in work this week and next.  

The contractor completed the strengthening work on Seaview Bridge and opened both lanes up to traffic on Dec. 17, 2021. FKAA’s contractor has material onsite and is planning to mobilize to perform subaqueous installation of the water, sewer, and reclaimed lines at Seaview Drive Bridge the last week in January. Upon completion of the utility work at Seaview, FKAA plans to move to Harbour Drive bridge to perform subaqueous installation there.

The strengthened east lane of Harbour Drive Bridge was opened with reduced weight restrictions lifted in November. The contractor removed the concrete deck and beams in the west lane and observed cracks in the south end bent, which required repair before installing the new steel beams. AEB has formed and poured a concrete wall between the existing bridge columns in the west lane at the south end and will perform the same repair on the east lane. Upon completion of the concrete wall, the contractor will place the new steel beams and construct the deck and railings in the west lane. The additional work to repair the end bent will result in the expected completion of the strengthened west lane and full opening of Harbour Drive Bridge to the first week in February 2022.   

12/16 Update: American Empire Builders (AEB) completed the installation of the sheet pile wall on the east end of the Bimini Bridge and are installing three concrete piles for the end bent in the same area. Upon completion of the pile driving at the east end of the bridge, the equipment will be mobilized to the west end of the bridge for the installation of a sheet pile wall along the canal on that side. Vibration monitoring is being performed during the work as required by project specifications. All readings have been within allowable levels.    

FKAA’s pipeline contractor completed the installation and pressure testing of the lines on the Bimini Drive Bridge. FKAA has received clearance from the Florida Department of Environmental Protection (FDEP) for the water main and anticipates performing the final tie-in of the lines during the first two weeks of January 2022.       

The contractor has installed the steel beams and over 90 percent of the wood deck for the north lane of the Seaview Drive Bridge; he anticipates completing the deck, pouring concrete diaphragms, and realigning the guardrail by the end of the week. The traffic control devices will be removed, and both lanes of the Seaview Drive Bridge will open to traffic early next week; opening both lanes will eliminate the size restriction for tractor-trailers.   

FKAA is coordinating with its contractor to mobilize at the Seaview Drive Bridge in late January or early February 2022 to perform the subaqueous installation of its lines.

The strengthened east lane of Harbour Drive Bridge was opened with reduced weight restrictions lifted on Nov. 10; AEB is saw-cutting and removing the concrete beams from the west lane and expects to deliver and place the new steel beams by the end of the week. Once the beams are set, the contractor will install the deck and railings. The anticipated completion of the strengthened west lane and full opening of Harbour Drive Bridge is the third week in January 2022.    

Due to the width and geometry of the strengthened lanes on Harbour and Seaview Drive Bridges, there is a restriction for tractor-trailers traveling over the bridges. This restriction will be lifted when Phase II, reconstruction of the second lane on both bridges, is completed.

12/3 Update: American Empire Builders (AEB) continues with installing the sheet pile wall on the east end of the Bimini Bridge. Upon completion of the east side, the equipment will be mobilized to the west end of the bridge for installation of the sheet pile wall along the canal on that side.   Vibration monitoring is being performed during the work as required by project specifications. All readings have been within allowable levels.    

FKAA’s pipeline contractor completed the installation and pressure testing of the lines on Bimini Drive Bridge. FKAA has received clearance from the Florida Department of Environmental Protection (FDEP) for the water main and will coordinate for the final tie-in of the lines.

The contractor has removed the concrete deck, railings, and concrete beams from the north lane of the Seaview Drive Bridge and is proceeding with installing the steel beams. Once the steel beams are placed, AEB will proceed with welding and installing the timber deck. The south lane is open with allowable loads at the Florida Legal Limit.   

Harbour Drive Bridge is open with reduced weight restrictions lifted on Nov. 10. Traffic is alternating on the strengthened east lane, and the allowable weight is the Florida Legal Loads. AEB removed the concrete railing and asphalt deck from the west lane, constructed the concrete gravity wall at both ends, and is preparing to remove the concrete deck and beams.

Due to the width and geometry of the strengthened lanes on Harbour and Seaview Drive Bridges, there is a restriction for tractor-trailers traveling over the bridges. This restriction will be lifted when Phase II, reconstruction of the second lane on both bridges, is completed.

11/18 Update: American Empire Builders (AEB) has removed the riprap and embankment on the south side of the Bimini Drive Bridge in preparation for installing the sheet pile wall. The contractor is laying out and preparing the location of the sheet piles and will begin installation this week. He anticipates the completion of both sides within two weeks. Vibration monitoring equipment is installed, and monitoring will occur during the work, as required by the project specifications.  

FKAA’s pipeline contractor completed the installation and pressure testing of the lines on the Bimini Drive Bridge and is waiting for approval from the Florida Department of Environmental Protection before performing the final tie-in of the lines.      

The contractor has removed the concrete deck and railings from the north lane of the Seaview Drive Bridge and is constructing the concrete gravity wall on both ends within the approach roadway. He anticipates cutting and removing the concrete beams next week. The south lane is open with allowable loads at the Florida Legal Limit.    

Harbour Drive Bridge is open with reduced weight restrictions -- lifted on Nov. 10. Traffic is alternating on the strengthened east lane, and the allowable weight is the Florida Legal Loads. AEB removed the asphalt deck and is saw cutting and removing the concrete bridge deck on the west lane. The contractor will construct the concrete gravity wall at both ends of the bridge before cutting and removing the concrete beams.   

Due to the width and geometry of the strengthened lanes on Harbour and Seaview Drive bridges, there is a restriction for tractor-trailers. This restriction will be lifted when Phase II, reconstruction of the second lane on both bridges, is complete.

11/10 Update: The strengthened lane on Harbour Drive Bridge on Duck Key is complete and is open for traffic. The traffic is alternating two-way traffic over the one strengthened lane, and the reduced weight limit has been removed. The allowable weight is the Florida Legal Loads. Regular garbage service will resume.

11/4 Update: American Empire Builders (AEB) has completed the temporary critical wall adjacent to the west end of the Bimini Drive Bridge and demolished the west end of the bridge to prepare for installing the sheet pile wall. The contractor plans to begin installing the sheet pile wall along the canal under the south side of the bridge during the week of Nov. 8 and anticipates completing both sides within two weeks. Vibration monitoring equipment is installed, and monitoring will occur during the work, as required by the project specifications.   

FKAA’s pipeline contractor completed the installation and pressure testing of the lines on the Bimini Drive Bridge and is waiting for approval from the Florida Department of Environmental Protection before performing the final tie-in of the lines.      

The contractor completed construction of the south lane of the Seaview Drive Bridge and opened it for traffic on Oct. 29; allowable loads are the Florida Legal Loads. AEB began demolition of the north lane of the Seaview Bridge.   

AEB is installing the railings on the Harbour Drive Bridge; work should be completed the week of Nov. 8. Once the railing is installed, the traffic will be shifted to the east lane, and the reduced weight limits will be removed on the Harbour Drive Bridge as well. This is anticipated to occur the week of Nov. 15.

10/28 Update: The four-ton weight restriction on Seaview Bridge was lifted as of this morning. Regular Florida Legal Load now applies to that bridge.

10/27 Update: American Empire Builders (AEB) installed piles and constructed the temporary critical wall adjacent to the west end of the Bimini Drive Bridge; the demolition of the west end of the bridge is 50 percent complete and is scheduled to be completed by Friday, Oct. 29. The contractor anticipates installing the sheet pile wall along the canal under the south side of the bridge over the next two weeks. Vibration monitoring equipment is installed, and monitoring will occur during the work, as required by the project specifications.  

FKAA’s pipeline contractor completed the installation and pressure testing of the lines on the Bimini Drive Bridge and is waiting for approval from the Florida Department of Environmental Protection before performing the final tie-in of the lines.

The contractor installed the timber deck on the south lane of the Seaview Drive Bridge and retrofitted the guardrail on the approach road. Additional posts are being added to the bridge railing to ensure that it meets design guidelines before opening the south lane to traffic, which is anticipated to occur on Thursday, Oct. 28. When traffic is shifted to the south lane, the weight limit will be restored to the Florida Legal Loads, and the contractor will begin demolition and reconstruction of the north lane of the bridge.

The steel beams and wood deck have been installed on the east lane of the Harbour Drive Bridge. The contractor is fabricating the bridge railing. Once the railing is installed, the traffic will shift to the east lane and the reduced weight limits will be removed on the Harbour Drive Bridge. This is anticipated to occur the week of Nov. 15.

10/8 Update: FKAA’s pipeline contractor has installed the structures at the east and west ends of the Bimini Bridge and is in the process of pressure testing the lines; upon completion of the testing they will perform the final tie-in of the lines. 

American Empire Builders (AEB) is preparing to install the sheet pile wall along the canal under the south side of the bridge once the pipeline contractor is demobilized. Layout, pre-drilling, and installation should take approximately two weeks. Vibration monitoring equipment has been installed and monitoring will occur during the work, as required by the project specifications.  

AEB will begin the installation of Temporary Critical Wall 5 as soon as FKAA completes the final tie-in. This will allow AEB to begin partial demolition of the west end of the south side of the Bimini Drive Bridge.

The contractor has installed the timber deck on the south lane of the Seaview Drive Bridge and is installing new railings on the south side of the bridge. AEB will retrofit the guardrail on the approach road, which is necessary to re-align it with the new, temporary bridge when they have completed the bridge railing. Upon completion of the deck and railing, the traffic will be shifted over to the newly constructed south lane and Phase II demolition/reconstruction of the north lane will commence.

The concrete beams on the Harbor Drive bridge have been removed and the new steel beams have been installed on the east side of the bridge. The contractor is welding the beams and the diaphragms in preparation for installing the timber deck.

Utility Relocation - FKEC Work Status

Several new poles have been installed near the project area as well as underground contractor tasks are being completed that are required to be done prior to the new Bimini Drive Bridge.  

  • The temporary overhead tie line will be constructed Feb. 17-19, weather permitting.  
  • The associated system reconfigurations will follow, tentative to start Feb. 22.
  • Underground contractor work going on north of the bridge and on Vista lane for the next week or two.

 For questions, contact: Michael J Roberge, Director of Engineering, Florida Keys Electric Cooperative, Office: 305-852-1034, Cell: 231-675-8500. 

Aerial view of the Duck Key bridges and islands affected


The Florida Department of Transportation (FDOT) inspectors advised that three interior Duck Key bridges that affect Harbour Island, Plantation Island, and Yacht Club Island need to be replaced.

Weight Restrictions

As of Nov. 18, 2021, there are no longer weight restrictions on any of the Duck Key bridges. Florida Legal loads can cross. 

Due to the width and geometry of the strengthened lanes on Harbour and Seaview Drive bridges, there is a restriction for tractor-trailers. This restriction will be lifted when Phase II, reconstruction of the second lane on both bridges, is complete.

Marine Traffic Update: Bimini Bridge

The contractor has secured construction barges underneath the Bimini Drive bridge as of Jan. 21, 2021.  The barges will remain in place for the duration of the project and will block all marine traffic underneath the bridge until the anticipated project completion date of June 30, 2022. The contact person for the Construction Engineering and Inspection (CEI) consultant for this project can be submitted to keith.duke@wsp.com.

Timeline

The date is subject to change and will be updated accordingly.

The design team has finalized the construction plans for the bridge strengthening at Bimini Bridge and is in the design phases for the temporary strengthening for Harbor and Seaview bridges. The design team has already begun coordinating with the Coast Guard for approval since the installation of beams will reduce the clearance under those bridges. The completed bridges will be at the same height as the original bridges. 

Permits

Active unexpired building permits affected by the weight limits on Bimini, Seaview, and Harbour Drive bridges will not be required to get inspections until 180 days after a solution for delivery of materials is available. If someone with an open permit is able to proceed by other means before that time, they may do so.

Garbage Service Updates

Garbage service is no longer affected by bridgework. Contact Monroe County Solid Waste Management at 305-292-4432 or Marathon Garbage Service at 305-743-5165 for additional information. 

Background

The Bimini Bridge, constructed in 1955, was already scheduled for replacement. County staff accelerated the bidding process for the Bimini Bridge with an estimated contract period to complete the replacement is 18 months. The County approved a strengthening plan for the existing north lane of the Bimini Bridge. This will allow one lane of traffic to cross while the south side of the permanent bridge is being constructed. The strengthened section will allow Florida legal weight limits to cross without a reduced weight load. Bimini Bridge affects Harbour, Plantation, and Yacht Club islands and also connects to the Harbour Drive and Seaview bridges.