A Look at Our Latest Growth in Florida

By Colliers Engineering & Design

New Look. New Name. Same Great Service.

Colliers Engineering acquires Bolton Perez & Associates

Bolton Perez & Associates, Inc. (BPA) recently merged with Colliers Engineering & Design and is expanding its geographic presence. One of South Florida’s leading transportation engineering firms, BPA has been serving this region with excellence since 1997. An award-winning multi-disciplinary engineering firm, BPA will expand Colliers Engineering & Design’s portfolio to include Highway Engineering, Bridge Design & Inspection, Traffic Engineering, Transportation Planning, and Construction Engineering and Inspection services within Florida. This partnership will enhance our ability to continue what has made us successful to date and enable us to expand our service lines and markets throughout the state.

“We are excited to have Bolton Perez & Associates join our team,” said Kevin L. Haney, PE, President/CEO of Colliers Engineering & Design. “This relationship is a strategic step that reinforces our existing footprint in providing exceptional services to our clients while continuing to serve South Florida’s transportation needs.”

With BPA now part of the Colliers Engineering & Design family, we will have the opportunity to further leverage the size, resources, and established infrastructure of the Colliers Engineering & Design brand, while maintaining the same level of service and quality staff our clients know and trust. The continued growth and expansion of our business remains a top priority and we look forward to capitalizing on the many opportunities that will bring value to our Florida clients and professionals.

NW 21st Avenue Construction Completed

Construction for the NW 21st Avenue mobility improvement/bridge replacement project from Oakland Park Blvd. to Commercial Blvd. in Broward County concluded December 2020. This FDOT project widened 1.5 miles of road to add buffered bike lanes in both directions, add sidewalk at gap locations, upgrade ADA features, and replace the existing bridge over the SFWMD C-13 canal. Scope of work also included cross slope correction, maintenance of traffic, planning for phased construction of the replacement bridge, as well as upgrades to drainage, signing and pavement markings, lighting, signalization, and landscaping.

As a testament to our estimating staff’s accuracy, the construction cost estimate came within 1% of that of the lowest bidder. Moreover, our roadway and bridge design teams were recognized with an outstanding PASS Score of 4 on our Final Plans submittal; a score under 5 is rare and considered superb!

Brickell Avenue Bridge Rehab Completed

The SR 90/US-41/Brickell Avenue Bridge rehabilitation is now complete! Bridge No. 870759 is a 491’ long concrete / steel / 115’ bascule bridge with four 50’ wide structural steel leaves over the Miami River, connecting Downtown Miami to Brickell.

The Brickell bridge is at the mouth of the Miami River and has the highest vehicular and maritime traffic of all bascule bridges over the River. Completed work includes installing a temporary span lock system; replacing the span lock system on all four locks; modifications to the PLC and controller console; maintenance of traffic; new lighting system; bridge painting; replacing traffic safety gates; and the installation and operation of the new pedestrian safety gates, inclusive of new railing and superstructure concrete for new sidewalk extensions. Work was completed under FDOT D6’s Bridge Rehabilitation Grouping contract.

Exceptional Design Scores in FDOT District 4

Kudos to our Roadway Team for successfully bringing these projects to completion:

aerial plans for roadway improvement

SR-834/Sample Rd. – PASS Score 0
Scope consisted of milling and resurfacing, widening of curb returns at NW 5th Terr. and NW 3rd Ave., sidewalk repairs and sidewalk connectivity at existing bus stop from NW 5th Ave., addition of signal heads, backplates and pedestrian signals to existing traffic signals, mast arm replacement at NW 5th Ave., signing improvements, pavement markings upgrades within milling area and street lighting improvements. As a result of the widening, minor impacts to existing drainage were addressed. In addition, drainage modifications between NW 5th Terrace and I-95 southbound entrance ramp were also addressed to correct spread issues.

Coral Ridge Drive – PASS Score 2
We developed construction plans and contract documents to widen Coral Ridge Drive from South Gate Blvd. to Royal Palm Blvd. The scope of the project includes the construction of buffered bike lanes, completing sidewalk at gap locations, and upgrading ADA features to approximately 2.2 miles of roadway encompassing 5 major signalized intersections. We also provided Utility Coordination, as well as Signing & Pavement Markings design services for the segment of Coral Ridge Drive from Royal Palm Blvd. to Holmberg Road. Other work included addressing drainage system impacts, pavement markings, signing, lighting, signalization, and landscaping associated with the widening, as well as milling and resurfacing of the pavement throughout the project limits.

Cow Key Presented at the 2020 ACI Concrete Convention

After successful implementation of several first-time innovations, the City of Key West now has two brand new operational bridges serving as the sole arteries to and from the City. Construction for the bridge rehabilitation and three-span replacement of the northbound and southbound bridges on US-1 over Cow Key Channel (Bridge Nos. 900086 & 900125) concluded November 2020. This project was proudly presented at the 2020 American Concrete Institute (ACI) Virtual Concrete Convention by our Chief Structural Engineer, Luis M. Vargas, PhD, PE, SE, who served as the Engineer of Record.

This innovative bridge rehabilitation replaced Spans 2, 3 and 4 using developmental Florida Slab Beams (FSB) with Carbon Fiber Reinforced Polymer (CFRP) prestressing and Glass Fiber Reinforced Polymer (GFRP) reinforcing. The first time a State Road bridge with FSB superstructure has utilized CFRP strands. This unique approach was highly beneficial as it eliminated concrete additives, waterproofing sealants, and corrosion concerns; reduced maintenance, labor & equipment costs; and ensures a longer service life.

Additionally, the required phased construction shifted existing traffic to a parallel bridge where heavy traffic conditions created an unacceptable level of service. Using an innovative traffic control approach and traffic simulation analysis, Colliers Engineering & Design successfully implemented a reversible traffic lane pattern on this project. Temporary delineators were used to shift the traffic patterns both in the morning (10 AM) and afternoon (2 PM) to maintain the existing number of lanes in each direction needed during peak traffic volumes. The reversible-lane configuration was developed in consultation with FDOT staff, local jurisdiction, and stakeholders. This is a first-time application of a reversible Temporary Traffic Control Plan using flush-mounted removeable delineators on an arterial facility in the State. This unique project is also listed in the FDOT Transportation Innovation Initiative website.

NW 27th Avenue Bridge Rehab Underway

We’re providing construction engineering and inspection services to the NW 27th Avenue over Miami River Bridge rehabilitation. Construction is expected to conclude in early Summer 2021.

Bridge Nos. 870731 & 870763 are two 365’ long concrete / steel bridges over the Miami River, consisting of 163’ bascule spans with two 52’ wide structural steel leaves each. This rehabilitation consists of replacing all 16 hydraulic main drive cylinders; refurbishing all four hydraulic power units (HPU); and replacing traffic gates and all four span lock systems, including modifications to the PLC and controller console for new span locks and traffic gates. Work also involves maintenance of traffic detours and extensive coordination with the U.S. Coast Guard. The NW 27th Ave bridge neighbors all major transportation marinas along the Miami River, and major coordination with their operators is required.

MDX Structure & Bridge Inspections Ongoing

Inspection of roadway

Our Bridge Inspection Team has been diligently working on the Miami-Dade Expressway Authority’s (MDX) Structures Inspection & Reporting Services contract which provides routine, new, and fractural critical inspection of structures and bridges along the SR 836/Dolphin Expressway, SR 112/Airport Expressway, SR 874/Don Shula Expressway, SR 878/Snapper Creek Expressway, and SR 924/Gratigny Parkway. Structures include pre-stressed AASHTO girder bridges, steel plate and box girders bridges, fracture critical bridges, and galvanized overhead sign structures. Since the start of this contract cycle 106 signs and bridges throughout the MDX System have been inspected.

SR 856/Lehman Cswy. Bridge Rehab Commences

View of the Lehman Causeway Bridge from the water

The SR 856/Lehman Causeway over Intracoastal Waterway Bridge rehabilitation began the second week of January. Bridge Nos. 870606 & 87607 are 2,563’ long concrete / steel bridges located between the City of Aventura and the City of Sunny Isles Beach. Coordination between both communities will be critical for achieving a successful project. Scope of work consists of bridge painting, spall repairs with corresponding reinforcing steel, major maintenance of traffic coordination into Sunny Isles Beach, crack injection and penetrant sealer application, and bridge drainpipe replacement. Construction completion is expected during late Summer 2021.

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