On major highway reconstruction projects, the cost of crane operations extends far beyond the rental rate. Ground preparation, matting requirements, assembly and disassembly labor, and the logistical challenge of positioning equipment in tight work zones all contribute to the total expense. The Different Types of Construction Project Costs Direct and indirect factors involved in heavy lifting demand innovative solutions that can reduce site prep while maintaining or improving lifting capacity. The Manitowoc MLC300 crawler crane, equipped with the Variable Position Counterweight (VPC) system, addresses exactly these challenges. Wisconsin-based Lunda Construction deployed this 330-ton crane on the $1.7 billion Zoo Interchange reconstruction project in Milwaukee, one of the state’s busiest travel corridors, and the results demonstrate how modern crane technology is reshaping cost expectations on highway construction sites.
The Variable Position Counterweight System and Its Cost Impact
The centerpiece of the MLC300’s cost advantage is Manitowoc’s Variable Position Counterweight (VPC) system. Unlike conventional crawler cranes that rely on a fixed counterweight arrangement, the VPC system automatically positions the crane’s counterweight to maintain the center of gravity closer to the center of rotation throughout the lift cycle. This dynamic positioning yields several measurable benefits for highway construction contractors.
Reduced Ground-Bearing Pressure
When the counterweight stays closer to the center of rotation, the crane exerts less ground-bearing pressure. On a highway construction site where the crane must sit between active traffic lanes, every square foot of bearing area matters. Joe Ruddell, sales manager of the rental division at Dawes Rigging & Crane in Milwaukee, noted that the reduced footprint and added stability are critical when the crane operates on limited real estate between eastbound and westbound freeway lanes with traffic passing on both sides.
Lower ground-bearing pressure translates directly into reduced site preparation costs. Types of Construction Project Costs Direct and Indirect include the labor, materials, and equipment needed to prepare crane pads. With the VPC system, contractors can cut back on grading, compaction, and matting requirements, saving both time and money on every lift location.
Crane Matting Reduction of Up to 50 Percent
The most tangible cost saving reported by Dawes on the Zoo Interchange project was the reduction in crane matting. According to Ruddell, the MLC300 with the VPC system can reduce the number of required mats by approximately 50 percent on an average job. Crane mats are heavy timber or composite panels used to distribute the crane’s load across soft ground. They are costly to purchase, transport, place, and remove. Cutting the mat count in half produces savings in:
- Material procurement or rental costs for mats
- Transportation and logistics for delivering and retrieving mats
- Labor time for placing and removing mats at each lift location
- Disposal or storage costs at the end of the project
For a multiyear highway reconstruction project with dozens of lift locations, a 50 percent reduction in matting creates substantial cumulative savings that improve the project’s bottom line.
Fewer Counterweight Loads Delivered to Site
The VPC system also enables the MLC300 to complete a given lift with less total counterweight mass than a conventional crane would require. This means fewer truckloads of counterweight blocks need to be delivered to the jobsite. Each avoided delivery saves on transportation costs, crane time spent loading and unloading, and the risk of damage during handling. On constrained urban highway projects where lane closures are limited to overnight windows, every saved truck movement helps keep the project on schedule.
Application on the Zoo Interchange Reconstruction Project
The Zoo Interchange, where Interstate 94, Interstate 894, and Highway 45 converge near Milwaukee, handles some of the heaviest traffic volumes in Wisconsin. The $1.7 billion reconstruction project represents one of the largest infrastructure investments in the state’s history. Lunda Construction, the contractor on the project, needed a crane capable of lifting and placing large tub girders that would support the ramp connection from Highway 45 and I-894 northbound to I-94 westbound.
Space Constraints on an Active Freeway
One of the defining challenges of the Zoo Interchange project is the limited space available for equipment. The crane had to be positioned between active freeway lanes with traffic moving in both directions. The MLC300’s compact footprint made it feasible to place the crane in locations where a larger conventional crawler simply would not fit. Additionally, the crane needed to move from one lift location to another within tight time windows during overnight lane closures, traveling across uneven ground conditions.
Lunda contracted with Dawes Rigging & Crane to furnish the MLC300 as a bare rental for the project. Dawes, a member of the ALL Family of Companies, operates out of a Milwaukee location that allows quick mobilization to the jobsite. The crane was configured with 157 feet of main boom and 190 tons of counterweight, providing the reach and capacity needed to set the large tub girders at the required radii.
Additional Lift Support Equipment
Beyond the MLC300, Dawes also provided supplementary crane and aerial lift support from its fleet. This additional equipment handled secondary lifts and access tasks around the jobsite, allowing the MLC300 to focus on the critical girder placements that defined the structural timeline. Coordinating multiple pieces of lifting equipment on a congested highway work zone demands precise planning, especially when lane closure windows are strictly enforced by traffic management authorities.
Load Chart Performance and Operational Advantages
During Manitowoc’s load testing program, the MLC300 was determined to have the strongest load chart in its class at 330 tons. This rating places the crane at the top of its size category, giving contractors greater confidence when planning complex lifts on highway projects where safety margins are paramount.
Greater Lifting Capacity With More Stability
Ruddell emphasized that the MLC300 provides greater lifting capacity and more stability than comparable crawler cranes while requiring less ground preparation and matting. The combination of a higher-rated load chart and a smaller footprint represents an unusual engineering achievement. In practical terms, contractors can plan lifts that would have required a larger crane with the MLC300, which opens up more placement options in tight work zones.
The load chart performance is particularly valuable when setting precast concrete girders, which are heavy, long, and must be placed with precision. The tub girders used on the Zoo Interchange project fall into this category. Any instability or capacity limitation during the lift could create serious safety risks and schedule delays.
Time Savings in Assembly and Disassembly
Beyond the lift itself, the MLC300 delivers time savings during assembly and disassembly. VPC-enabled cranes from Manitowoc are designed for quicker setup and teardown compared to conventional cranes of similar capacity. On a highway project where mobilization windows are often restricted to overnight hours, faster assembly means more time actually lifting and less time preparing the crane to work. The quick disassembly also reduces labor costs at the end of the job, when crews are typically under pressure to demobilize and open lanes to traffic.
Ease of Movement Across Rugged Terrain
An advantage of the VPC system that operators particularly value is the ease and stability of moving the crane from one location to another, even across rugged terrain. On the Zoo Interchange, Lunda needed to crawl the MLC300 across sections of the freeway during limited lane closure windows. The stability of the VPC system during travel allowed these moves to proceed efficiently without the need for extensive ground preparation between positions.
Cost Comparison and Productivity Gains on Highway Projects
When evaluating crane options for a highway construction project, contractors must weigh multiple cost factors beyond the rental rate. The following table summarizes how the Manitowoc MLC300 with VPC compares to a conventional crawler crane of similar capacity on key cost drivers.
| Cost Factor | Conventional Crawler Crane | Manitowoc MLC300 with VPC | Estimated Savings |
|---|---|---|---|
| Ground preparation per lift location | Extensive grading and compaction required | Minimal surface preparation needed | 40-60% reduction in prep time |
| Crane mat requirements | Full mat coverage at each location | Approximately 50% fewer mats | 50% reduction in mat costs |
| Counterweight transport loads | Multiple truckloads for full counterweight | Fewer loads due to VPC efficiency | 25-35% fewer deliveries |
| Assembly time | Standard setup duration | Faster assembly with VPC design | 15-25% time savings |
| Disassembly time | Standard teardown duration | Quick-disassembly design | 15-25% time savings |
| Mobility between lifts | Requires extensive path preparation | Enhanced stability on uneven ground | Reduced path prep costs |
These savings compound across the life of a large infrastructure project. When a crane remains on site for months or years and must be repositioned multiple times, the per-event savings in matting, ground prep, and assembly accumulate into significant budget improvements. New England Construction Business Navigating Costs Labor Regulatory challenges in other regions show how equipment innovations can help offset rising labor and material costs.
Safety Benefits of Reduced Site Prep
Fewer mats, less grading equipment on site, and fewer truck movements also contribute to improved jobsite safety. Each piece of equipment and each delivery truck entering a highway work zone introduces collision and injury risk. By reducing the amount of support equipment and material handling required for crane operations, the MLC300 helps create a less congested and therefore safer work environment. New Online Safety Tool From Nccco and Nsc programs demonstrate the industry’s growing focus on data-driven safety improvements, and equipment that inherently reduces hazards aligns with this trend.
Key Considerations for Contractors Evaluating the MLC300
Contractors considering the Manitowoc MLC300 for highway construction projects should evaluate the following factors:
- Project duration and lift count – The savings in ground prep and matting are most significant on projects with many lift locations spread across a large site.
- Work zone constraints – The MLC300’s compact footprint is most valuable on tight urban highway interchanges where space between traffic lanes is limited.
- Lane closure availability – If the project allows only overnight or weekend closures, the crane’s quick mobilization and stability during travel become critical advantages.
- Girder weight and placement radius – The 330-ton load chart should be verified against the specific lift plan, particularly for long-reach placements.
- Local rental availability – Contractors should confirm that a VPC-enabled MLC300 is available through a rental partner with highway project experience, such as the ALL Family of Companies.
The Zoo Interchange project demonstrates that the Manitowoc MLC300 with VPC system is more than a new crane model; it represents a shift in how heavy lifting costs are managed on highway construction. By addressing the two largest variable cost drivers in crane work (ground preparation and matting) through intelligent counterweight positioning, the MLC300 allows contractors to allocate more of their budget to productive construction activities and less to site preparation. For highway contractors facing tight margins, restricted work zones, and demanding schedules, this kind of equipment efficiency translates directly into competitive advantage on bids and profitability on completed projects.