Municipalities & Bridges Coatings

Why Paint and Epoxy Anti-Skid Systems Fail on Bridge Decks

Bridge deck environments expose surface coatings to a set of conditions most products are not built to survive repeatedly. Understanding the specific failure mechanisms helps explain why municipalities end up in short recoating cycles that drain maintenance budgets year after year.

• Freeze/thaw cycling. Moisture that penetrates the coating bond freezes and expands. Over multiple seasons, this process breaks down adhesion at the substrate interface and leads to delamination. Once a coating lifts, it creates a slip hazard and accelerates the corrosion it was applied to prevent.
• Snowplow blade contact. Steel plow blades shear directly across bridge deck surfaces during winter operations. Most epoxy and paint-applied anti-skid systems do not carry enough surface hardness to survive repeated direct plow contact without wearing through in the first or second winter season.
• Deicing salt penetration. Chloride ions from deicing salts migrate through degraded coatings to the substrate below, initiating corrosion in steel bridge decks. A coating that deteriorates quickly provides effective protection for only a fraction of its intended service period.
• Load-driven flexure and thermal expansion. Repeated flexure from heavy vehicle loads, combined with thermal expansion and contraction of the deck structure, causes brittle surface coatings to crack at edges, joints, and field-applied overlap zones.

The result is a maintenance pattern where the same bridge deck surface is being recoated every two to four years rather than operating on the longer service intervals that allow municipal budgets to support other infrastructure priorities.

Anti-Skid Coating Characteristics

Our coatings exceed NAVY/NAVSEA Military Specification No. 24667 testing requirements. They withstand flexing, resist peeling, and are not impacted by inclement weather or exposed sunlight. Offering a coefficient of friction of 1:1, SafTrax coatings decrease slip-and-fall risks by offering enhanced grip in wet or hazardous environments.

SafTrax Products for Municipal and Bridge Deck Specification

SafTrax offers two primary products suited to bridge deck and municipal infrastructure applications. Both are available with technical data sheets and application specifications for DOT and municipal procurement processes.

• SafTrax TH335: TH335 is a wear-resistant non-skid coating formulated for high-traffic surface applications. It is suited for bridge decks, pedestrian walkways, and other municipal surfaces where abrasion resistance and extended surface life are the primary performance requirements. TH335 is the specification-grade choice when durability over a long maintenance interval is the driving project requirement.
• SafTrax TH604: TH604 is a high-performance non-skid coating used in demanding service environments including aerospace and naval applications. For municipal or DOT projects specifying a maximum-service-life coating on bridge decks or elevated infrastructure, TH604 delivers exceptional hardness and surface texture retention under conditions that would accelerate wear in standard products. TH604 is the appropriate specification when the maintenance interval needs to be extended as far as possible and surface performance cannot be compromised.

How To Coat Bridges

Coating your metal surface with SafTrax products is easy and cost-effective. Apply 1/8^th inch thick wires using a twin wire arc spray process. Mixing, curing, or cordoning off areas for long periods of time is not required. It is suggested to clean surfaces coated with SafTrax by scrubbing or pressure washing. Developed to endure harsh environmental onslaughts and outlast other coating products, SafTrax products are ideal treatments for carbon steel, cast or ductile iron, aluminum, and stainless steel surfaces.

Common Applications For Municipality Non-Skid Coatings

SafTrax non-skid coatings are specified across a range of municipal environments beyond bridge deck surfaces:

• Bridge decks and approach slabs: Steel and concrete surfaces subject to vehicle traffic, deicing chemicals, and seasonal freeze/thaw exposure
• Pedestrian bridges and elevated walkways: Public-use surfaces requiring consistent slip resistance for pedestrian safety and ADA compliance
• Stair treads and ramps on municipal facilities: Interior and exterior surfaces in public buildings and service facilities where slip liability is a documented concern
• Parking structures: Vehicular and pedestrian traffic areas in publicly operated parking facilities
• Loading docks and service entrances: High-frequency use surfaces on municipal maintenance buildings and public works facilities

Each of these applications benefits from the same hardness, texture retention, and mechanical adhesion that makes SafTrax the preferred specification for bridge deck work.

Lifecycle Cost for Municipal Infrastructure Budgets

Municipal maintenance budgets are evaluated over multiyear horizons, and the true cost of a surface coating includes every reapplication within a given planning period. A paint or epoxy bridge deck coating requiring reapplication every two to four years in a northern climate carries a higher net cost over ten years than a thermal arc spray system with a significantly longer service interval, even when the upfront application cost of the thermal arc spray system is higher.

SafTrax coatings are designed to maintain performance over maintenance intervals that exceed what conventional surface treatments deliver. The mechanically bonded metallic surface does not degrade under UV exposure, does not delaminate under thermal cycling, and does not wear through from plow contact at the rate that aggregate-filled epoxy systems do. For municipal engineers and project managers presenting total cost of ownership to budget authorities, the lifecycle calculation frequently supports SafTrax as the lower net-cost option across a five or ten-year capital planning window.

Why Choose Saftrax For Anti-Slip Coatings?

Municipal engineers, DOT project managers, and civil engineering consultants can request product data sheets, application specifications, and project-specific technical guidance directly from SafTrax. SafTrax non-skid coatings are manufactured and supported by Thermion Inc., with technical resources available for DOT specification writing and municipal procurement requirements.

Improve municipal metal bridge safety and longevity with SafTrax non-skid thermal spray coatings. Our team is available to help identify the best SafTrax anti-slip bridge surface coating for your application.