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Demex Marine Construction Crews installing a steel crib structure for a pier. Large Armor stone barge and tug boat delivered to site, Cat 345 excavator and lincoln welder.

The Leaders in Residential and Heavy Civil Marine Construction on Lake Erie

Serving the Coastal Shoreline from Port Buffalo to Port Monroe

Our Services

Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.

Revetments & Seawalls

From a few feet to miles of armor stone,  Revetments are a great option to drastically slow the effects of erosion due to wave action. 

Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.

Cribs, Piers, & Docks

From ballast stone filled cribs, to timber docks leading to the water, there are many options to enhance your water access on your property. 

Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.

Pile Driving

Sometimes there is just no substitute for the power of steel. Sheet piling installations are a tall order, but will secure the shores of your property. 

Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.

Dredging 

When those marinas and boat launches get a little too shallow, it's time to dredge. We're ready to ensure you get back to a safe water depth. 

Demex Marine Construction and Gamellia Ironworks & Construction work in tandem as sister companies and specialize in the core elements of marine construction, with a focus on erosion prevention, construction, and maintenance. We have grown these small, family-owned businesses into one force that is known for its craftsmanship, safety efforts, and innovation. With our highly trained crews, and meticulously maintained fleet, we are ready for your project!

Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.

Demex provides exceptional marine construction services along Ohio’s Lake Erie Shoreline and tributaries, for both residential and civil projects. Our experience and attention to detail has made us a standout in our industry.  We remain competitive by always aiming to save you valuable time and resources. Demex strives to use locally sourced materials, and American made steel on every project, keeping our customers and our company connected to our local economy. 

A Look at who we have done work for...

Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.
Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.
Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.
Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.
Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.
Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.
Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.
Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.
Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.
Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.
Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.

From day one, the Demex vision has been to lead the industry in Safety Standards and Environmental responsibility.  With years of experience in Marine Construction, we have homed in on exactly how to do it; from our rigorous safety training our crews complete, to the "human aspect" core of our management philosophy.  With both a well-maintained fleet and decades of technical knowledge, Demex always strives to complete every project without incident. Protecting both our area's greatest natural resource, Lake Erie, and the shores that surround her. 

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Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.

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Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.
Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.
Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.
Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.
Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.
Demex Marine Construction is a Lake Erie, ohio. Marine contractor who specializes in erosion control, mitigation, breakwalls, sheet pile walls, armor stone, piers, cribs, jettys and other marine structures. We work with coastal engineers, ODNR, and Army Corp of Engineers. We have a fleet of barges, excavators and tug boats. Serving Avon Lake, Bay Village, Rocky River, Lakewood, Lorain, Sheffield Lake, Vermilion, Cleveland, Bratenahl.

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