Seattle Tunnel Reaches Halfway Point

The tunnel is now about 43% complete, and crews have already installed 607 concrete rings to form the tunnel walls

August 24, 2016

mynorthwest.com

Bertha, the tunnel boring machine digging Seattle's new Alaskan Way Viaduct replacement tunnel, has nearly reached the tunnel's halfway point after digging 4,000 feet. The tunnel is now about 43% complete, and crews have already installed 607 concrete rings to form the tunnel walls.

[VIDEO] Drone Flies Through Seattle's SR 99 Tunnel Bertha is Digging

Bertha has to move through 10 zones that make up the entire project and is currently on the border between zones 5 and 6.

(more updates on the Seattle tunnel project...)

2022 Contractors Top 50 New Products Award 63f589c68dad5

Nominations Now Open for the Equipment Today Contractors’ Top 50 New Products

The 2024 award will highlight the best new product introductions and enhancements in the construction industry. Submissions close May 24.

Jobs that can rack up 10,000 hours on a diesel machine might add 6,000 hours or 7,000 hours to a comparable electric machine.

Challenges & Benefits of Moving to Electric Equipment

As emission regulations tighten, construction equipment power sources will evolve, but adoption will be gradual.

Fact or fiction? Debunking 3 myths about pump-free fluid exchanges.

Fact or fiction? Debunking 3 myths about pump-free fluid exchanges.

Pump-free fluid exchange systems are cleaner, safer, faster and sometimes misunderstood. Bust three pump-free myths with Sage Oil Vac.

The K 540i Power Cutter features an adjustable blade guard and cutting depth up to 4 in. (100 mm).

Husqvarna Battery-powered K 540i Power Cutter

The K 540i Power Cutter features an adjustable blade guard and cutting depth up to 4 in. (100 mm).

The SL22EV is powered by a 24.9 kWh lithium-ion battery, offering an expected run time of five to six hours on a full charge.

CASE SL22EV Electric Articulated Loader

The SL22EV is powered by a 24.9 kWh lithium-ion battery, offering an expected run time of five to six hours on a full charge.

300 Dpi 1500px Dcn920 F1

DEWALT Introduces 20V Max XR Cordless 21º and 30º Framing Nailers

The next-gen nailers are compatible with optional extended magazines, DZN920 and DZN930 (sold separately), which are constructed from high-strength magnesium and hold two strips of nails.

This machine features a lifting height of 108 in., allowing individuals to manage hard-to-reach loads at safe distances.

CASE SL12TR Telescopic Articulated Loader

This machine features a lifting height of 108 in., allowing individuals to manage hard-to-reach loads at safe distances.

Charter Up Construction

Hidden Costs of Worksite Parking

Re-evaluating crew transportation logistics through the lens of shuttle services is not just an operational decision, it's a strategic investment in the future of construction project management.

Built to Dig. Built to Last. Peace of Mind Included.

Built to Dig. Built to Last. Peace of Mind Included.

SANY swing boom excavators are compact equipment champs. Powerful and easy to transport. Conquering confined spaces on jobsites across America.

The use of abrasion resistant steel in manufacturing of conveyor pulleys supports durability in demanding environments and handling bulk materials.

Superior Industries Upgrades Chevron Pulley

The use of abrasion resistant steel in manufacturing of conveyor pulleys supports durability in demanding environments and handling bulk materials.

Asv Sd Series Forestry Mulcher Attachment

ASV SD Series Forestry Mulchers

These mulchers are designed to be durable, easy to attach and loaded with relentless carbide teeth.

Bobcat 50dmx Drum Mulcher E35a7470 050523 Ko 6580852ea2e96

Bobcat Drum Mulcher

Bobcat has introduced a drum mulcher attachment for select excavators.

Case Mulcher

CASE Mulcher

Get through your daily grind, efficiently and easily, with CASE mulchers.

Tl1001

CASE TL100 Mini Track Loader

The TL100 features a rated operating capacity of 1,000 lbs. (35 percent of tipping load) and is compatible with several attachments.

Inspired by You, Designed for the Job | JLG®

Inspired by You, Designed for the Job | JLG®

Every job is a new way to leave your mark on tomorrow. Don’t settle for anything less than a partner who shares your drive to do your best work.

Reputable sellers, UCC searches, and ensuring all paperwork is accounted for are all good practices to follow.

Buying Used Concrete Equipment? Beware of Hidden Liens

There's an uncommon-but-real issue that could crop up when buying any type of used equipment, and that’s buying equipment that unknowingly has a lien on it.

Offering 10- to 12-ton capacity, models with electric or air brakes are available based on operating preferences.

Eager Beaver Offers Four Equipment Trailers

Offering 10- to 12-ton capacity, models with electric or air brakes are available based on operating preferences.

Shortly after its origin, the Cary-Lift product line was acquired by Pettibone, and it remains a popular solution for pipe, pole, and log handling to this day.

Pettibone Celebrates 75th Anniversary of Cary-Lift

Pettibone announced that it is celebrating the 75th anniversary of the creation of the Cary-Lift.

The Mix-N-Go mixer features a polyethylene drum designed for removal of dried concrete.

Multiquip Releases Battery-powered Mix-N-Go Concrete Mixer

The Mix-N-Go mixer features a polyethylene drum designed for removal of dried concrete.

With a minimal working radius of 3 m and an out-of-work position of 10 m, the crane can be adapted to construction site conditions.

Liebherr Showcases 195 HC-LH 6/12 Hydraulic Luffing Jib Crane

With a minimal working radius of 3m and an out-of-work position of 10m, the crane can be adapted to construction site conditions.

The NM 500-25 and NM 1000-25 are designed for small-scale applications with a lower need for nitrogen, while the NM 2000-25 and NM 3000-25 meet the demands of large, intensive projects.

Atlas Copco Offers Portable Nitrogen Membrane Generators

The NM 500-25 and NM 1000-25 are designed for small-scale applications with a lower need for nitrogen, while the NM 2000-25 and NM 3000-25 meet the demands of large, intensive projects.

This sealer was over applied. It should have been applied 1 to 2 mils thick, but was likely 20 to 30 mils thick.

'Thin to Win' With Decorative Concrete Sealers

Thin applications are the simple answer to many acrylic sealer problems contractors face on decorative concrete projects like stamped and stained concrete.

Abrasives where abrasive material is sprayed onto a nylon pad are used for maintenance and light restoration.

Abrasives 101

Learn how to choose the correct abrasives for grinding and polishing concrete.

Unicontrol and Level Best, united in their commitment to driving innovation and efficiency in the construction industry, aim to push the boundaries of construction technology, setting new benchmarks for excellence as the industry becomes increasingly receptive to these advancements.

Unicontrol to Integrate 3D Tech With Level Best Equipment

By integrating Unicontrol's 3D machine control system with Level Best's precision grading equipment, this partnership aims to raise standards in machinery efficiency and usability.

The electric-powered excavator can be charged rapidly using the PowerTree.

DEUTZ Highlights Eco-friendly Parts, Software

The company will showcase the TCD 3.9 engine in the sub-4 liter category along with an electric excavator, powered by DEUTZ Electric System, and the DEUTZ PowerTree mobile rapid charging system at INTERMAT.

Gerrit Marx.

CNH Names CEO

Gerrit Marx will succeed Scott Wine as of July 1.

Built to Dig. Built to Last. Peace of Mind Included.

Built to Dig. Built to Last. Peace of Mind Included.

SANY swing boom excavators are compact equipment champs. Powerful and easy to transport. Conquering confined spaces on jobsites across America.