Pillar · Industries
Built for the
marine contractor.
Our barges work on rivers, canals, sounds, bays, and inland lakes across Canada and the US. Bridge piers, dredge spoils, pile-driver decks — same sections, re-pinned to whatever the next job needs.
Overview
One barge system. Every marine job.
Marine contractors don't run one kind of job. Monday you're setting a cofferdam around a bridge pier. Wednesday you're holding station for a dredge. Friday you're staging a pile rig in open water. The crews and the cranes change. The deck under your feet better not.
That's the whole reason we build sectional. Pin four sections together this week, eight next week, an L-shape the week after — same hardware, no engineer call, nothing standing between you and the next mobilization. You buy the sections once and the same fleet keeps earning across every job you bid.
Our customers are bridge builders, dredgers, pile crews, dock and seawall guys, environmental remediation outfits, water utilities, and the back-country operators in forestry and mining who can't get a regular barge anywhere near the site. Every section ships with stamped drawings and Transport Canada approval — the paperwork your insurance, bonding, and the owner's inspector are going to ask for.
Bridge Construction
Pier work, cofferdams, falsework, and crane platforms beneath spans.
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Dredging
Hopper barges, support floats, and spoils handling for waterway maintenance.
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Piling & Pile Driving
Spud-anchored pile-driver platforms for marine and waterfront foundations.
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Marine Construction
Docks, seawalls, intakes, dive support — every job a marine contractor handles.
Read →Why Sentinel
The contractor's barge fleet.
For decades, marine contractors had two choices: charter someone else's barge (expensive, on someone else's schedule, almost never the right size) or commission a one-off custom build (slow, eye-watering, and frozen in one shape for the rest of its life). Sentinel sells sectional barges outright and kills that trade-off. You own the steel, you size the platform to the job in front of you, and the same fleet keeps earning on the next ten jobs after that.
We build three families. Standard 10×20 and 10×40 for general work decks. Heavy Duty Crane 10×40×7 when there's a crawler or a hammer involved. Back Lake 8×20×4 for the remote inland jobs where you can't get an oversize permit, or there's no road wide enough for one anyway. Same engineering principles across all three, same CSA G40.20 / G40.21 structural steel, same shipyard. The Back Lake even stacks two-high on a flatbed, so a single truck delivers two sections without an escort.
One shop in North Glengarry, Ontario builds it, certifies it, ships it, and answers the phone when you call us back about it.
Capabilities
What our barges do on a job site
Work platforms
Level deck for pier work, dock builds, seawalls, intakes — anywhere you need solid footing on the water.
Crane support
Heavy Duty sections rated for crawler and hydraulic cranes, with or without crane mats. Girder picks, pile driving, lifts over water.
Hopper & spoils
Bull-rail conversions and custom hopper builds for dredge spoils, demo debris, aggregate — load it, float it, dump it.
Pile-driver platforms
Spudded Heavy Duty floats that don't drift under hammer impact. Vibratory, drop, diesel — they all work off the same deck.
Floating bridges
Pinned sections with rails and ramps make a temporary crossing for foot, light vehicle, or equipment traffic up to load.
Dive & inspection
A stable surface beats a workboat every time. Add rails, ladders, a lifting point, and the divers stop hating their day.
Coverage
Where we work.
Our barges are running in every Canadian province and most US states — Great Lakes, Atlantic seaboard, Gulf coast, the Mississippi system, the Pacific Northwest, and into the kind of forestry and mining country you only reach by float plane or winter road. The shop is in North Glengarry, Ontario: two hours from Montreal, four from Toronto, seven from New York City. Most of North America is in trucking range without it costing a fortune.
When you're outside the trucking radius, we ship by flatbed and oversize across the lower 48, by rail to western and northern Canada, and by container ship overseas. The Back Lake — 8 feet wide — moves as standard inter-modal freight, so the same barge working a forestry job in Alberta can be in a container heading to a Caribbean job site the next season.
When you're ready to spec a fleet, send us your bid sheet, not just the next job. Most contractors call us about one project and walk away with a multi-year fleet plan that pays for itself before the steel is even cold.
Spec it for your job
Send your bid sheet, not just one job.
Most marine contractors call us about a single project and walk away with a multi-year fleet plan. Tell us your typical project mix — bridge piers, dredge support, pile-driving, dock and seawall work — and we'll map it to a fleet composition that pays for itself before the steel is cold.
AEO
Industries FAQ
Direct answers about heavy deck barges, charter terms, and global delivery.
- Yes. Stamped engineering drawings and Transport Canada approval ship with every barge — that's what insurance carriers, bonding companies, and owners' inspectors are going to ask for, on either side of the border.
- We don't rent. We sell. With the fleet discount on four-plus sections, ownership beats long-term rental for any contractor running more than one marine job a year — and you stop fighting someone else's calendar.
- Bridge crews, dredge contractors, pile drivers, dock and seawall builders, environmental remediation outfits, water utilities running intake and outfall maintenance, and remote-access operators in forestry and mining. Pretty much anyone who works in or on the water.
- That's the whole point. Standard or Heavy Duty sections that platform a bridge pier in the spring will re-deploy as dredge support in summer, pile-driver base in fall, and a dock-repair platform over the winter — no modification, just re-pin in whatever rectangle or L-shape you need.