Free tool 20+ years on the water 8 states served
Last updated: June 2026 — baseline pricing from real boardwalk projects.
A boardwalk is priced by deck area, your decking material, the height above the surface, and how much of the run is over water — not per linear foot. A walkway on footings over dry ground costs less than the same deck on driven pilings out over the water. Enter the width and length (along the shore), choose what it runs over (land, water or both), set the height and pick a decking material; this free calculator sizes the deck and returns an all-in range — then lets you download a PDF estimate to keep. Heading straight out over the water on a perpendicular walkway? Use our pier cost calculator, or add a roofed slip with the dock & boathouse cost calculator.
Quick answer: most freshwater boardwalks run about $20–$130 per square foot of deck, all-in (deck, supports and mobilization included). Pressure-treated pine is the low-cost workhorse; composite is the popular low-maintenance choice; tropical hardwood and concrete are premium. A walkway on grade over land sits near the low end; tall runs out over the water (longer driven pilings) sit higher, and saltwater or brackish sites add a coastal adjustment on the over-water portion.
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Whether you're costing an elevated walkway over a wetland, a shoreline pathway along a lake, or a boardwalk that runs out over the water, pricing is driven by how much deck you build, the material you deck it with, how high it stands, and how much of the run is carried on pilings over the water versus footings on dry land. The calculator above accounts for the big ones; here's what's behind the range:
| Decking material | Typical cost / SF | Best for | Typical lifespan |
|---|---|---|---|
| Pressure-treated pine | $20–$45 | Budget freshwater & over-land paths | 15–25 years |
| Marine composite | $40–$60 | Low-maintenance, splinter-free walkways | 25–30+ years |
| Tropical hardwood (Ipe) | $80–$130 | Premium look, hardest wearing | 40+ years |
| Concrete deck | $50–$100 | Commercial & permanent high-load | 50+ years |
Ranges are all-in (deck plus supporting footings or pilings and mobilization) and match our published pier decking pricing. The calculator's live number sizes your deck, then multiplies it by a rate within the material's range positioned by the deck height and how much of the run is over water — rather than a flat per-foot figure. Railings, lighting, benches and ramps are quoted separately after a site review. Switch the water type to Saltwater to add a coastal adjustment on the over-water portion; tidal and brackish sites are confirmed after a site review.
Explore detailed pricing: boardwalk & waterfront walkway guide, pier cost, dock cost, bulkhead cost, compare all our cost calculators, or browse our completed waterfront projects.
Honest answers about boardwalk and waterfront walkway pricing — what a boardwalk costs per square foot, how being over water changes the price, how height changes it, and what this estimate covers.
Most freshwater boardwalks cost $20 to $130 per square foot of deck, all-in (deck, supports and mobilization included). By material: pressure-treated pine $20–$45/SF, composite $40–$60/SF, tropical hardwood (Ipe) $80–$130/SF, and concrete $50–$100/SF. A path over dry land sits near the low end; a tall run out over the water sits higher. Enter your width, length and what it runs over above for a build-specific range, or see our boardwalk & waterfront walkway cost guide.
Yes. Over dry land the deck sits on footings or short posts on grade, which is the cheaper end of the range. Over water it has to stand on driven pilings — longer, heavier and more labor to set — so an over-water run costs more. A mixed boardwalk that crosses the shoreline blends the two: set the “Runs over” toggle to Water & land and use the share-over-water slider, and the calculator weights the rate between footings and pilings.
Pressure-treated pine is the cheapest decking at around $20–$45 per square foot all-in and is the workhorse choice for freshwater and over-land paths. Composite costs more up front ($40–$60/SF) but is low-maintenance and splinter-free with a 25–30+ year deck life, so for a heavily used public walkway it often delivers better long-term value than repeatedly re-decking with pine.
Yes. A higher deck — to clear flood stage, a steep bank or deeper water — needs longer posts or pilings and more bracing, so taller boardwalks sit toward the higher end of each material's range. The calculator positions your per-SF rate by the height you enter together with how much of the run is over water, and your exact figure is confirmed at a site review.
The range covers the walkway deck, the supporting footings or pilings, and mobilization. It excludes railings, lighting, benches and ramps, which are quoted separately because they depend on your design and code requirements. Final pricing also depends on terrain, shoreline access, soil and permits, so your firm price follows a site review — estimates are reviewed by Roman Ross, Marine Construction Estimator at Shore Protect Construction.
No — the estimate covers the walkway deck and its supports only. ADA-compliant ramps, railings and handrails are quoted separately because their cost depends on the rise, the run, code requirements and how much railing your boardwalk needs. We build to ADA slope and handrail standards for public and commercial elevated walkways; tell us the access requirements when you request an exact quote and we'll price the ramp and railing alongside the deck.
Yes. Saltwater, brackish and tidal sites need corrosion-resistant materials and heavier hardware, so the over-water portion of a coastal boardwalk costs more than the freshwater baseline. Switch the water type to “Saltwater” and the calculator adds a coastal adjustment to the over-water share of your run; your final coastal price is confirmed after a site review.
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