![]() ![]() ![]() Heavy machinery drives seawalls into the ground in sheets. Larger selection of materials since corrosion isn’t a factor Not only will saltwater corrode many types of seawalls, but you also need to build high enough to account for the tidal variations in sea level-two issues not present at inland lakes.įreshwater lake walls often cost far less than coastal projects for various reasons, including: But size and material determine cost more than the type of water. Typically, you’ll pay about twice as much for saltwater seawalls as you would freshwater bulkheads. You will almost always need a permit for construction on a waterway. Coastal prices vary by state, usually due to locally regulated building requirements. Permit fees and regulatory processes for seawalls vary from place to place, but often fall in the $400 to $1,500 range expect higher costs in areas of Florida and Texas. You’ll often find it used with a living seawall, where marine grasses and other growth are planted near the shoreline to curb erosion. It’s a pile of small boulders and large rocks laid against the shore, usually at a grade of 30 to 45 degrees, and used in front of other seawalls. Riprap seawalls cost $70 to $200 per linear foot. They’re almost always reinforced with steel rebar. They’re created one of two ways: on-site with wet concrete poured into forms or in precast panels or blocks. Like other seawalls, height plays the largest cost factor. ConcreteĬoncrete seawalls cost $200 to $800 per linear foot. They’re recommended more for freshwater areas, but treated lumber can withstand coastal areas’ saltwater waves. Cost differences usually come from the height. Wooden seawalls cost $150 to $500 per linear foot. Plus, steel lasts about half as long because it corrodes and eventually fails. Because of the competitive price and durability of vinyl, most contractors recommend vinyl capped with concrete versus a steel wall. Steel seawalls cost $250 to $700 per linear foot. Builders often use concrete across the top for both aesthetic and structural reasons. Vinyl doesn’t corrode and can last 50 to 80 years with little maintenance. Some coastal areas call for eight- to 10-foot walls, nearly doubling the cost. Vinyl seawalls cost $200 to $600 per linear foot for a five-foot-tall wall. Find hiring guides, material costs, expert advice, how-to's and more. ![]()
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