| Key Takeaways | Details |
|---|---|
| Cost per Linear Foot | $150 – $600 |
| Average Cost for 100 feet | $15,000 – $60,000 |
| Materials Impact Costs | Varying costs for steel, vinyl, concrete, wood, riprap |
| Maintenance Costs | Regular inspection and repairs are crucial |
| Hiring Professionals | Essential for cost estimation and quality assurance |
Building a seawall is a significant investment, vital for protecting coastal properties from erosion and storm damage. Below, we detail the costs involved, from initial construction to ongoing maintenance.
Seawall Cost Per Linear Foot
Seawall construction typically ranges between $150 and $600 per linear foot. This variation depends on the materials used, the complexity of installation, and site-specific factors.
Average Cost To Build A 100′ Seawall
For a standard 100-foot seawall, the average cost ranges from $15,000 to $60,000. This estimate includes both labor and material expenses.
Seawall Cost
The total cost of a seawall can vary greatly depending on its length. Below is a detailed table of average costs based on seawall length:
| Length (feet) | Average Cost |
|---|---|
| 25′ | $3,800 – $15,000 |
| 50′ | $7,500 – $30,000 |
| 100′ | $15,000 – $60,000 |
| 150′ | $22,500 – $90,000 |
| 200′ | $30,000 – $120,000 |
Average Seawall Construction Cost
On a national level, the average seawall construction cost is as follows:
| Cost | |
|---|---|
| National Average Cost | $35,000 |
| Minimum Cost | $5,000 |
| Maximum Cost | $100,000 |
| Average Cost Range | $15,000 to $60,000 |
Bulkhead Or Seawall Cost Per Foot
Different materials affect the cost of a seawall. Here is a comparison of costs per linear foot based on the material:
| Material | Cost per Linear Foot |
|---|---|
| Steel | $200 – $600 |
| Vinyl | $200 – $550 |
| Concrete | $200 – $600 |
| Wood | $150 – $500 |
| Riprap Rocks | $50 – $200 |
| Living Shoreline | $50 – $350 |
Steel Seawall Cost
Steel seawalls are among the most durable, ranging from $200 to $600 per linear foot. They are highly resistant to corrosion and impact, making them suitable for areas with severe weather conditions.
Vinyl Seawall Cost
Vinyl seawalls typically cost between $200 and $550 per linear foot. Vinyl is a popular choice due to its resistance to rust and lower maintenance needs compared to steel.
Concrete Seawall Cost
Concrete seawalls, ranging from $200 to $600 per linear foot, provide excellent durability and are ideal for protecting properties from strong tidal waves.
Wood Seawall Cost Per Foot
Wooden seawalls cost about $150 to $500 per linear foot. While more aesthetically pleasing, wood requires significant maintenance to prevent rot and pest infestations.
Riprap Rock And Boulder Seawalls
Riprap rock and boulders, costing $50 to $200 per linear foot, are natural and provide excellent erosion control. They are particularly effective for lakefront and riverbank applications.
Living Shoreline Cost
Living shorelines range from $50 to $350 per linear foot. They use natural elements like plants and rocks to stabilize the coastline, providing an eco-friendly erosion control method.
Cost Factors To Build A Lake Seawall Or Bulkhead
Several factors influence the total cost of building a seawall. Here is a table that outlines the different types of seawalls and their respective costs and factors:
| Seawall Type | Cost per Linear Foot | Notes |
|---|---|---|
| Standard | $150 – $400 | Easy access, shoreline work, reinforcing old seawalls, vinyl, wood, or riprap walls, riverside or lakeside installs |
| Medium | $400 – $600 | Basic replacement, limited land access, need for obstacle clearance, working from water barge, steel, reinforced vinyl, or concrete |
| Complex | $600 – $1,000 | Complex replacements, hard-to-access areas, significant backfill requirements, clay or rocky soil, open-ocean exposure, combinations of riprap with steel or concrete |
Truline Seawall Cost
Truline seawalls incorporate both concrete and vinyl for enhanced durability and flexibility. Costs can vary significantly, often falling within a higher price range due to the premium materials involved.
Seawall Maintenance, Repair, And Replacement Costs
Ongoing maintenance and timely repairs are crucial for extending the lifespan of a seawall. Here is a table summarizing common maintenance tasks and their average costs:
| Maintenance | Average Cost | Description |
|---|---|---|
| Seawall Inspection | $200 – $600 | Marine structural engineers should check seawalls for damage every 5-6 years or during real estate transactions |
| Seawall Repairs | $100 – $250 per linear foot | Includes fixing minor cap cracks, installing new concrete caps and tiebacks, grouting joints, installing secondary anchors, and soil stabilizations |
| Seawall Replacement | $150 – $600 per linear foot | Involves repairing leaning walls, joint separation, toe and berm failure, drainage system installation, and significant damage repairs |
Seawall FAQs
How Much Does A Seawall Cost In Michigan?
In Michigan, seawall costs can vary based on local conditions and material choices. Generally, costs align with the national average, with added considerations for lake water levels and seasonal changes.
What’s The Difference Between A Bulkhead And A Seawall?
| Bulkheads | Seawalls |
|---|---|
| Vertical retaining wall structures | Long and curved structures |
| Only resist small waves | Protect from large tidal waves |
| Steep slope | On top of long shallow slopes |
| Common for marinas, lakeshores, rivers | Common for city coastlines, beaches, bays |
| Made of steel, wood, concrete, aluminum, vinyl | Made of reinforced concrete, steel, riprap |
| Primarily for private residences | Primarily for public coastal regions |
| Have French drains for rainwater | Have weep holes and drainage systems |
How Long Does A Seawall Last?
The lifespan of a seawall varies by material. Here are estimated lifespans:
| Seawall Material | Lifespan (Years) |
|---|---|
| Steel | 25 – 35 |
| Vinyl | 50 – 60 |
| Concrete Wall Slabs | 30 – 50 |
| Wood | 10 – 40 |
How Deep Should A Seawall Be?
The depth of a seawall depends on local conditions, including wave action, soil type, and coastal erosion. Typically, a seawall should extend several feet below the seabed to ensure stability.
Are Seawalls Effective?
Yes, seawalls are effective at protecting coastal properties from erosion and storm surges, although their effectiveness can be influenced by construction quality and maintenance.
Hiring A Seawall Installation Or Repair Contractor
Hiring a skilled contractor is essential for the effective installation or repair of a seawall. Professionals can provide accurate cost estimations, ensure quality work, and obtain necessary permits.
Questions To Ask
When hiring a contractor, consider the following questions:
- What experience do you have with seawall construction?
- Can you provide references from previous projects?
- What materials do you recommend for my specific site?
- What are the projected costs and timelines?
- Do you offer any warranties or guarantees on your work?
- What is included in the maintenance plan?
Properly planning, constructing, and maintaining a seawall can significantly extend its lifespan and protect valuable property from the forces of nature. Consult with professionals and conduct thorough research to ensure the best outcomes.
