Truckable barges.
Two high on a truck.

For coastal and Great Lakes work, hull width doesn't matter much — the sections launch where they're built and float in. For remote inland jobs — back lakes, mining tailings ponds, hydro reservoirs, river headwaters — every inch of trailer width is a problem. Oversize permits add days to the mobilization, escort vehicles add cost, and many state and provincial routes restrict oversize loads to daylight and good-weather windows.

Width drives permits

Road rules on width vary by state and province. Wider loads can need permits, escorts and route surveys; narrower loads usually move more simply. Confirm the rules for your route with your carrier before you plan the mobilization.

Sentinel's Back Lake 8×20×4 section is 8 ft wide and stacks two high on a truck, and the builder states it moves anywhere in Canada without permits. Pin two together in the water and you have a 16×20 working deck. It is designed for intermodal transport — sized for mixed shipping between rail, ship, air and truck; measured centre to centre of connections and Transport Canada approved.

When the trade-off favours truckable

The Back Lake section is smaller than a standard 10×40, so deck area per truck is lower. The math favours truckable when:

• The launch site is more than a few hundred miles from the nearest barge yard.
• Marine access to the work water doesn't exist (landlocked lake, reservoir, tailings pond).
• Schedule risk from permit delays would push the contract.
• The job is short enough that mobilization is a meaningful share of total cost.

For typical inland and remote applications, see remote island logistics and mining tailings. For the full Back Lake spec, visit the Back Lake barge page.