We Don’t Just Rent Jacks. We Engineer the Lift.
Generic rental yards ship equipment and hope for the best. We provide the job assessment, the custom engineering, and the onsite support you need to execute critical lifts safely.
When You Are Lifting 500 Tons, “Good Enough” is a Liability.
Bridge lifts and heavy infrastructure projects push the limits of physics. The real danger isn’t just gravity. It’s relying on generic vendors who lack the engineering depth to handle the load.
Vague Specifications
Generic rental yards treat critical lifts like standard transactions.
Outsourced Testing
When you can’t verify the calibration, you inherit the liability.
Unverfiable Risk
You are risking dropped loads, lawsuits, and denied funding.
You shouldn’t have to wonder if your equipment was properly vertified.
Heavy Lifting Expertise Proven on the Bay Bridge & Golden Gate
For over 50 years, CH Bull has supported Northern California’s most critical infrastructure projects. We don’t just rent jacks. We engineer the lift to satisfy DOT requirements and keep your project compliant.
What Sets Us Apart:
75 Successful Bridge Lifts
We have completed 75 successful bridge lifts in the past 25 years.
Largest Rental Fleet
We hold the largest fleet of rental jacks west of the Mississippi, ensuring we have the tonnage you need, when you need it.
In-House Calibration
We test and calibrate 100% of our equipment in our own facility, so you always know exactly what you’re getting on site.
Special Fabrications
When standard equipment won’t meet your project specs, we engineer a solution.
Complete Jacking Solutions.
From Design to Done.
Testing & Calibration
Certified. Compliant. Ready.
In-house, DOT-approved calibration to ensure your system meets strict engineering tolerances.
Consulting & Lift Planning
Plan the Lift First
We assess the job site, identify risks, and engineer the lift plan before equipment ever leaves the yard.
Rental Equipment
Tonnage on Demand
Access the largest fleet of hydraulic jacks west of the Mississippi, ready for immediate deployment.
On-Site Jacking Services
Expert Support On Site
We provide on-site technical support and safety training to ensure your crew executes the lift correctly.
Repair Services
Keep Assests Operational
Factory-authorized repair services to keep your own hydraulic assets safe, compliant, and operational.
Custom Fabrications
Built for Your Load
When off-the-shelf won’t work, we engineer and build custom steel fabrications tailored to your specific load.
Safety Training
Train Your Crew
Basic Hydraulic Safety, Fall Protection, Ladder Safety, Confined Space, and OSHA violation-focused topics.
How We Get Your Lift Approved and Executed
From first site visit to final lift, a clear process built around compliance and safety.
Step 1: Consult & Assess
We don’t just take an order number. We ask the hard questions and walk the job site to identify risks and load requirements early.
Step 2: Get the “DOT Compliance Package”
We create detailed system drawings and a lift plan engineered to your specs, giving you the documentation you need to satisfy inspectors and speed up permit approvals.
Step 3: Rent with On-Site Support
We deliver fully calibrated, load-tested equipment and stand by you on the job site so the lift is executed safely and on schedule.
See Our Engineering in Action
From seismic retrofits to emergency response, we support the most complex lifts in the West.
3,500-Ton Bay Bridge Tower Base Lowering
The Challenge:
Lowering the massive 3,500-ton (7 million lbs) main tower base 28 feet to the floor of the San Francisco Bay—safely and precisely.
The Solution:
We worked with design engineers to develop a custom 3-point jacking system using sixteen 500-ton jacks and threaded rods, successfully lowering the base to the exact depth required.
Seven I-80 Overpasses Raised During Overnight Closures
The Challenge:
Raising seven different overpasses up to 18 inches to increase clearance, with a strict window of only 8 hours per night to keep the freeway open.
The Solution:
We designed a high-tonnage system with 32 calibrated jacks (4,000-ton combined capacity) and custom manifolds, allowing the contractor to lift, secure, and reopen the road on time every night.
Emergency Jacking Support Helps Replace Pfeiffer Canyon Bridge
The Challenge:
Emergency replacement of the crumbled Highway 1 bridge that had cut off the Big Sur community.
The Solution:
We supplied the double-acting launch jacks and 100-ton lock nut jacks to support the new steel structure, providing on-site consultation to ensure the bridge was launched safely across the canyon.
Don’t Let a Generic Rental Put
Your Project at Risk.
Your reputation depends on this lift. Get the engineered solution and the on-site support you need to execute it safely.