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Guntert & Zimmerman Const. Div.

Name: Guntert & Zimmerman Const. Div.
Address: 222 E 4th Street, Ripon, CA, 95366, US
Telephone: (209) 599-0066
Price range: $$$

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Ripon, CA
Guntert & Zimmerman Const. Div.

Premium manufacturer of concrete slipform paving equipment, trenchers and canal liners.

09/07/2026

This Labor Day, We Celebrate the People Who Build America

To every operator, mechanic, engineer, fabricator, welder, technician, and crew member who shows up every day and gets the job done: thank you.

Since 1942, G&Z has been proud to build equipment that helps construct the roads, runways, canals, and other critical infrastructure we depend on. But behind every machine and every successful project are the skilled people who make it possible.

From our team in Ripon, California, to construction crews on jobsites around the world, we salute the hardworking men and women who keep our industry moving forward.

Have a safe and well-deserved Labor Day Weekend.

08/15/2026

S400 Series Post #6: VariWidth

-Change Paving Widths in Minutes-
Changing paving widths shouldn't consume an entire shift. On projects with multiple paving widths, every hour spent reconfiguring the paver is an hour you're not placing concrete. G&Z developed its patented VariWidth tractor design to dramatically reduce that non-productive time.

-Industry Leading Telescopic Range-
At the heart of G&Z's patented VariWidth design is a double-telescopic tractor frame providing a standard width range of 6.5 to 17.5 ft. (2.0 to 5.3 m), the widest telescopic range in its class. This exceptional range is made possible by G&Z's unique tunnel-through-the-bolster design. With optional bolt-in extensions, the S400 reaches 24.5 ft. (7.5 m) without a Dowel Bar Inserter.

-Width Changes Without Center Support Stands-
VariWidth uses the S400's propulsion system and 90-Degree Steering Mode, together with cam rollers and optional hydraulic clamping pucks, to extend and retract the tractor frame without center support stands. The result is fast, stable width changes while maintaining a rigid tractor frame throughout its operating range; even the operator access walkway telescopes with the frame.

The S400 can quickly adapt for:
• Single-lane street, ramp and shoulder paving
• Dual-lane highway and airport paving
• Offset paving up to 12 ft. (3.65 m)
• Zero and minimum-clearance applications
• Barrier wall and curb-and-gutter applications

The S400's universal bolting pattern, incorporated into the bolsters and tractor center module, allows a complete swing leg, jacking column, and crawler track assembly to be relocated to multiple positions around the tractor to match the paving application.

For contractors running older machines in this class, the advantage goes well beyond having a telescopic frame. It's the ability to quickly reconfigure one paver for a wide range of applications and put it back to work. Less setup time. Fewer non-productive crew hours, better machine utilization, more paving time. And when VariWidth is combined with G&Z's TeleEnd telescopic paving kit end sections, width changes become even faster. We'll take a closer look at TeleEnds in our next post.

More Paving Time. Less of Everything Else.

07/28/2026

“Timeline Series” - Post 25

2018 - G&Z’s is forced to redesign their popular Eagle 4500 and 5500 wheel trenchers to accommodate the taller, government mandate low emissions, Tier 4f diesel engine while maintaining operator visibility. The updated Eagle 4500 trencher includes new, powerful, shaft mounted wheel drive to dramatically reducing the number of moving parts. In addition to this, the new Eagle 4500 operator controls have been updated to new electric over hydraulic joysticks, display screen complete with EGON Telematic capabilities.
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07/26/2026

G&Z Equipment Powers Major Boise Airport Pavement Reconstruction

Boise Airport (BOI) is undergoing a major concrete apron reconstruction in preparation for its new, $700 million Concourse A, adding up to 10 additional gates and other airport improvements. Construction Manager/General Contractor Hensel Phelps is leading the project to accommodate Boise Airport's remarkable passenger growth, which has increased 81% over the past decade.

Concrete Placing Company, Inc. (CPC) completed Phase 1 of the apron reconstruction in 2025 and is currently completing Phase 2. Founded in Boise, Idaho, in 1962 by Earl Ferguson, CPC has grown under the leadership of President and CEO John B. Ferguson into one of the Northwest's premier concrete construction contractors, earning a reputation for delivering large, complex projects with exceptional quality and on-time performance. CPC's paving division, led by Vice President Jon Berger, combines experienced leadership with the latest construction technology. For over 30 years, CPC has trusted Guntert & Zimmerman equipment to help deliver some of the Northwest's most demanding highway and airfield paving projects. Today, CPC operates a modern fleet of G&Z’s equipment designed to meet the demanding requirements of today’s large-scale concrete paving.

Airport paving requires exceptional precision, tight tolerances, and the ability to consistently place thick, low-slump concrete. CPC's trusted G&Z fleet on the Boise Airport project includes:
• 2 MP550 Placers – High-production concrete placement with exceptional versatility and precision.
• 2 S600 Slipform Pavers – Engineered for superior slipform paving quality, rapid width changes, and exceptional maneuverability.
• TC1500 Texture Cure Machine – Delivers uniform texture and cure application with rapid width changes and outstanding maneuverability.

With company origins dating to 1942, Guntert & Zimmerman has spent nearly eight decades partnering with contractors to build critical infrastructure throughout the world. We're proud that contractors like Concrete Placing Company have placed their trust in G&Z for decades. From highways and airports to canals and underground construction, G&Z equipment continues to deliver the precision, reliability, and productivity needed to complete the world's most demanding infrastructure projects.

We are proud to support CPC as they continue building the infrastructure that keeps America's transportation network moving forward.

(Photos by Renee New, Project Manager for City of Boise on the apron reconstruction project)

07/14/2026

“Timeline Series” - Post 24

2017 - G&Z completely redesigns the Power Unit on its successful S850 Mid-Size Slipform Paver to accommodate the taller, low emissions CAT 415 HP (260 kW) Tier 4f diesel engine. In addition to this, the S850SL Paver’s design is updated to accept a CDBI in a Compact Configuration without the need for Bolster Extensions. This time saving feature allows the contractor to add and remove the CDBI rapidly giving them the opportunity for more paving hours in the day and more paving days during the season.

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07/07/2026

“Timeline Series” - Post 23

2015 - G&Z takes the first fresh look at placer designs in more than 30 years with the introduction of the MP550 Material Placer. The design goals achieved include 2x reduction in the time required to dump a truck with the versatile and unique hopper design, access to conveyors for ease of maintenance and cleaning, wireless belly pack remote control, improved reach and clearance for the swing conveyor, and exceptional on-site maneuverability with high flotation rubber tires. With the low profile, hydraulically adjustable flop gate, the hopper can handle a wider variety of trucks. Optional jacking columns provide better clearance for maneuvering on site and access for cleaning. The powerful propulsion system provides the torque required to push the largest loaded concrete trucks. The MP550 set a new standard for material placers.

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07/04/2026

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07/03/2026

S400 Series Post #5: SmartLeg / AccuSteer

Stop Repositioning. Start Paving.

Today’s road reconstruction projects are more complex than ever. Urban work zones, bridge approaches, barrier walls, utilities, drainage structures, and active traffic all create variable obstacles that interrupt paving production.

G&Z's patented SmartLeg / AccuSteer technology was developed to solve that problem. Where conventional pavers often require stopping, supporting the machine, repositioning crawler tracks, locking them in the new position, and restarting production, the S400 keeps moving. SmartLeg hydraulically adjusts the swing leg position while AccuSteer automatically keeps the crawler track aligned in the intended direction, under load and on the fly.

That fundamentally changes the jobsite experience.
• Less repositioning
• Fewer hand pours
• More continuous paving
• Higher crew productivity
• More available paving time

Combined with the S400’s narrow-profile design, SmartLeg / AccuSteer is designed for tight jobsites, giving contractors the agility to work in confined paving environments without sacrificing production. Operators can reposition swing legs, jacking columns, and crawler tracks from the operator platform or G&Z’s wireless Belly Pack, keeping the pour moving while navigating obstacles.

SmartLeg / AccuSteer is more than a steering system, it's a machine reconfiguration system that has transformed how contractors pave with and maneuver a slipform paver.

Integrated with G&Z’s EGON control system, SmartLeg / AccuSteer allows fast and synchronized transitions between multiple operating modes:
✔ 90-Degree Steering – Move laterally through tight jobsites with synchronized crawler steering and propulsion.
✔ Counterrotation Mode – Rotate the paver within its own footprint, eliminating time-consuming multi-point turns.
✔ Transport Mode – Semi-automatically reposition swing legs and crawler tracks into transport configuration in hours, not an entire shift.

For contractors running older machines in this class, SmartLeg / AccuSteer delivers a clear productivity advantage: less time maneuvering, less time resetting, and more time placing concrete.

More Paving Time. Less of Everything Else.

www.guntert.com

06/30/2026

"Timeline Series” - Post 22

2014 - G&Z introduces the S400 Multi-Purpose Slipform Paver, which is an entry level single and dual lane paver with the ability to handle multiple applications including: city streets, ramps, shoulders, highway, airport, off-set, zero or minimum clearance, as well as barrier walls and curb & gutter. The S400 has a functional design at an affordable price point. The same patented productivity features available with the S600 such as the industry changing SmartLeg / AccuSteer are available with the S400, adding value for the customer. The versatile, cost-effective, and productive S400 can also achieve excellent ride numbers on the toughest IRI and zero blanking band projects.

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06/21/2026

Visit us at www.guntert.com

Address

222 E 4th Street
Ripon, CA
95366

Opening Hours

Monday	8am - 5pm
Tuesday	8am - 5pm
Wednesday	8am - 5pm
Thursday	8am - 5pm
Friday	8am - 5pm

Telephone

(209) 599-0066

Website

http://www.guntert.com/

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