Duck Key Bridge Updates

12/8/2022 Update: American Empire Builders (AEB) completed forming and pouring the concrete moment slab along the west bridge approach this week and anticipates forming and pouring the remaining barrier railing this week. The contractor will continue placing additional fill to finish the west approach roadway, and is constructing the stormwater swale on the southeast side of the bridge.

Comcast is on-site today to complete conduit installation on the west side of the bridge.  

The contractor is coordinating with the paving company to schedule the roadway paving in the next few weeks. The current schedule indicates Phase I will be complete and the traffic switched over before the end of the year, and full completion of the bridge by fall 2023.

Contracts for the construction of the Seaview Drive Bridge and the inspection and oversight (CEI services) were approved by the Monroe County Board of County Commissioners at the Nov. 15 meeting. The County received one construction bid from American Empire Builders for $5,260,000.

11/18/2022 Update: American Empire Builders (AEB) completed placing and compacting the fill for the west approach roadway up to the bottom of the junction slab and constructed the concrete cap on the MSE wall on the west side of the bridge. The contractor trenched and connected 25 feet of utility conduit to the bridge beams to expedite the construction of the approach slabs. AT&T and Comcast will complete the conduit installation and pull their cables after AEB completes the junction slabs and the installation of the remaining subgrade. AEB completed the concrete placement in the approach slab on Nov. 17.   

AEB is assembling the reinforcing steel and the forms for the concrete barrier wall and junction slab along the outer edge of the lane on the west side in anticipation of concrete placement over the next two weeks.

The contractor is coordinating with the paving company to schedule the roadway paving after the concrete and subgrade work is completed. The current schedule indicates Phase I will be complete and the traffic switched over before the end of the year, and full completion of the bridge by fall 2023.

Contracts for the construction of the Seaview Drive Bridge and the inspection and oversight (CEI services) were approved by the Monroe County Board of County Commissioners at the Nov. 15 meeting. The County received one construction bid from American Empire Builders for $5,260,000.

11/4/2022 Update: American Empire Builders (AEB) completed the concrete barrier wall on the east approach and the bridge railing across the bridge deck on Oct. 25. The contractor is continuing to construct the MSE wall on the west side and placing and compacting the fill. He anticipates completing the fill this week or early next week. After the fill work is complete, the contractor will be forming and pouring the concrete cap on the MSE wall and outer edge of the approach roadway on the west side. He will also begin forming the swales on the shoulder on the east end of the bridge.

Bimini Bridge railing concrete pour looking from the bridge to the concrete railing

Comcast has completed the installation of its conduit on the east side of the bridge. AEB is coordinating with Comcast for the installation of conduit in the approach roadway on the west side and anticipates having Comcast perform that installation in approximately three weeks. AEB will form and pour the concrete approach slab on the west side after the conduit installation.

AEB has submitted the asphalt mix designs for the roadway to the Engineer of Record and received approval. He is coordinating with General Asphalt to perform the paving on both sides of the bridge upon completion of the west side. The current schedule indicates Phase I will be complete and the traffic switched over before the end of the year, and full completion of the bridge by fall 2023.

Contracts for the Seaview Drive Bridge construction and the inspection and oversight (CEI services) are on the Monroe County Board of County Commissioners Nov. 15 meeting agenda for approval. The County received one construction bid from American Empire Builders for $5,260,000.

10/11/2022 Update: AEB completed the installation of the concrete deck on the south lane of the bridge and has continued to work on the installation of the bridge railing. They have installed a portion of the MSE wall panels on the west end of the bridge, installed the tie-backs, and are placing and compacting the backfill.

On the east end of the bridge, the contractor is removing some fill placed to stabilize the crane for the beam installation and is preparing the area for the construction of the asphalt roadway. AEB is coordinating with Comcast for the remaining work to be completed on the east end before the installation of the asphalt roadway. Comcast’s subcontractor was on site to complete some pre-work to place the remaining conduit. Comcast staff has indicated that crews were sent to southwest Florida for recovery work, and they will be able to complete the work at Bimini Bridge as needed.

FKAA’s contractor has completed work on Duck Key and is finalizing the remaining punchlist items and site clean-up before final demobilization.

A contract for construction engineering and inspection (CEI) services for the Seaview Drive Bridge Replacement Project is on the October BOCC agenda for approval. On Oct. 5, Monroe County received one bid for the construction of the Seaview Drive Bridge from American Empire Builders (AEB) for $5,260,000.00. Staff is reviewing the bid before preparing a contract.

9/9/2022 Update: AEB completed the installation of the fourth and final arch beam for Phase I of the Bimini Drive Bridge on Thursday, Sept. 8. The contractor will begin installing the steel to form and pour the bridge deck and will continue with the installation of the leveling pad, MSE wall, and backfill on the west end of the bridge. AEB is coordinating with Comcast to ensure that all required trenching along the roadway on the east side of the bridge is complete before construction of the approach roadway on that side.

FKAA’s contractor completed the work on Duck Key; site restoration is complete except for minor roadway striping work, and they have demobilized their equipment.     

Monroe County advertised a Request for Qualifications (RFQ) for construction engineering and inspection (CEI) services for the Seaview Drive Bridge replacement and held the selection committee meeting on Aug. 30. Staff is preparing a contract with WSP, the highest ranked respondent. The plans and specifications for construction bids have been advertised, and construction bids are due on Oct. 5.  

The project is scheduled to be completed in fall 2023; the contractor is working to accelerate the remaining work where possible.

8/30/2022 Bimini Bridge Beam Update: AEB has advised that the two cranes that will be used to install the four arch beams will be set up onsite Wednesday and the first beam is scheduled for delivery Thursday, Sept. 1. The remaining three beams will be set one per day the following week until all for have been installed. During the time that the beam is being lifted and set in place, the bridge will be closed to traffic for approximately 30 minutes. The contractor’s plan is to close the bridge at 10 a.m. each morning after the morning traffic has subsided, but the exact time is contingent upon the transport company and traffic. The county will provide updates through the NextDoor App as needed during the work if the plan deviates from the above. 

8/29/2022: Bimini Bridge Beam Delivery: AEB is mobilizing the equipment that will be used to set the four arch beams on the south side of the bridge; two cranes will be used to lift the beams and set them in place.  

The cranes should be in place early next week, and the anticipated delivery of the first beam is Tuesday, Aug. 30; the remaining three beams will be set one each day through the week until all four have been installed. During the time that the beam is being lifted and set in place, the bridge will be closed to traffic for approximately 30 minutes. The contractor’s plan is to close the bridge at 10 a.m. each morning after the morning traffic has subsided, but the exact time is contingent upon the transport company and traffic.  

The county will issue updates through the NextDoor App as needed during the work if the plan deviates from the above schedule. 

Once the beams are set, AEB will begin construction of the deck and the roadway on the east end of the bridge. AEB is coordinating with Comcast to ensure that all required trenching along the roadway on the east side of the bridge is complete before the construction of the roadway. The contractor has set the MSE wall panels in front of the bent on the west side of the bridge in anticipation of the beam installation, and he will continue with the construction of the MSE wall on the west end of the bridge after the beams are in place.  

FKAA’s contractor completed the final tie-in at Harbour Drive Bridge; all samples were acceptable, and the line is in service. FKAA and its contractor performed the site walkthrough this week to develop a punch list for site restoration and close-out of the Harbour Drive project. 

Monroe County advertised a Request for Qualifications (RFQ) for construction engineering and inspection (CEI) services for the Seaview Drive Bridge replacement and received responses to the RFQ on Aug. 16. The selection committee meeting is scheduled for Aug. 30. The plans and specifications for construction bids has been advertised and construction bids will be due on Oct 5.  

8/24/2022: Bimini Bridge Beam Delivery: The contractor advised Monroe County that the first beam scheduled to be delivered Thursday (tomorrow) is postponed. There will not be a beam delivery or the associated bridge closure on Thursday, Aug. 25. We are waiting for information on rescheduling and will pass it on as soon as we receive it.

8/23/2022: Bimini Bridge Beam Delivery: The contractor has notified the county that the target date for the first beam to be delivered and set at Bimini Drive Bridge is now Thursday, Aug. 25.  The contractor’s plan is to have the beam arriving by truck at the bridge in the morning on Thursday. AEB intends to close the bridge at approximately 10 a.m. after morning traffic has cleared. The closure should last approximately 30 minutes, and then the bridge will be re-opened for the rest of the day. This process will be repeated daily until all four beams are set.

Residents should note that this schedule is estimated and subject to change as delivery times depend on traffic and other issues. Updates will be provided as they are available.

8/18/2022 Update: Bimini Bridge Intermittent Closures Aug. 24 - Aug. 30: American Empire Builders (AEB) has notified the County that they intend to transport the arch beams for Bimini Drive Bridge to the project site on Wednesday, Aug. 24. The exact time of the deliveries is unknown because they are contingent upon the transport company and traffic. There are a total of four beams that will be delivered one each day from Aug. 24 through Tuesday, Aug. 30, excluding Saturday and Sunday. There is an extra day for contingency if the transporter cannot deliver on one of the days.

During the days when beams are delivered, there will be intermittent closures while the beam is staged on the bridge adjacent to the construction, lifted off of the trailer with two cranes, and placed on the newly constructed end bents on the south side of the bridge. The closures will last approximately 30 minutes.

Emergency services and utilities will be notified of the intermittent closures.

8/10/2022 Update: AT&T installed two 4-inch conduits within the east approach and up to the end bent at Bimini Bridge in mid-July for placement of both ATT and Comcast utilities. American Empire Builders (AEB) formed and poured the concrete approach slab upon completion of conduit installation. The contractor is pouring the coping and concrete barrier wall/traffic railing on the east approach this week. In addition, the contractor is setting the concrete panels in front of the end bent on the west side of the bridge and will begin trenching to construct the footer for the MSE wall on the west side shortly.

AEB is working on scheduling delivery of the four arch beams for the south side of the bridge and anticipates having them delivered to the site within the next two to three weeks, subject to the trucking subcontractor’s scheduling and permitting. Once onsite, the contractor will have to block traffic in both directions to lift the oversized beams with two cranes to set them in place. Once a firm date is established, residents will be notified of the date and time of closure through website notification and signage. In addition, local utilities, services, and emergency agencies will be notified of this activity that requires a temporary bridge closure. Additional information and updates will be provided as details are confirmed.

FKAA’s contractor completed the tie-in of the 6-inch reclaimed water line and the 8-inch waterline at Seaview Drive Bridge last week and is currently beginning site restoration. They anticipate performing the tie-in of the sewer force main and water line at Harbour Drive Bridge next week and will begin the site restoration there upon completion of those tie-ins.  

Monroe County is processing a change order to address the additional work consisting of procuring and installing two pile splices as well as the redesign and construction of the footer and column that replaced pile #6 on the west side of the bridge. The delay due to the pile not reaching bearing capacity and construction of the footer and column added 134 days to the contract duration; the revised scheduled completion date for the project is September 2023.

Monroe County has advertised a Request for Qualifications (RFQ) for construction engineering and inspection (CEI) services for the Seaview Drive Bridge replacement and will receive responses to the RFQ on Sept. 16. The plans and specifications for construction bids are being advertised shortly and construction bids will be due on Oct. 5.  

7/13/2022 Update: American Empire Builders (AEB) is continuing with the installation of the barrier wall support slab construction and stubbing out of the reinforcing steel for barrier wall construction on top of the MSE wall on the east side of Bimini Bridge.  The contractor notified AT&T and Comcast that he is ready for their contractor to install the two 4-inch conduits along the approach for eventual installation through the new beams. AT&T’s contractor has indicated he will be onsite to perform the trenching and conduit installation on Friday, July 15, 2022. AEB will begin forming the steel for the approach slab on the east side this week so that the slab can be poured once AT&T contractor has installed the conduits. AEB anticipates proceeding with constructing the barrier wall and railing on the east side over the next two weeks.

The contractor formed and poured the column that will replace the outer pile on the west end of the bridge this week and will begin forming the steel for the end bent in addition to grading and preparing to construct the leveling pad on the west end.

FKAA’s contractor is preparing the manhole structures for tie-in at both Seaview and Harbour Drive Bridges. FKAA plans to tie in the sewer and reclaimed water lines at Seaview Drive Bridge this week and perform the same work at Harbour Drive Bridge the week of July 18th.  They are awaiting approval from the Florida Department of Environmental Protection (FDEP) before performing the tie-in of the potable water lines at both bridges; FKAA anticipates receiving clearance from FDEP the week of July 25th and will commence tie-in as soon as clearance is received. FKAA will send out public notifications for the scheduled shutdown of the potable water system once the tie-in schedule is confirmed. There will not be a disruption of the wastewater or reclaimed water systems during tie-in.  

Monroe County has advertised a Request for Qualifications (RFQ) for construction engineering and inspection (CEI) services for the Seaview Drive Bridge Replacement and anticipates advertising for construction bids shortly so that the Seaview Drive Bridge Replacement project may begin in Fall 2022.   

Utility Relocation - FKEC Work Status

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


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, the 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. 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. 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 of 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 not affected by bridgework.

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.