TX 817.834.3310 CA 626.334.9304


INWESCO access doors and grates are designed by a registered civil engineer in accordance with the applicable standards and specifications of the American Association of State Highway & Transportation Officials (AASHTO) and the American Society for Testing Materials (ASTM C-857) as last revised. Our access doors and grates are designed with safety, performance, and durability in mind.

INWESCO further offers access doors and grates, which are built to our customer’s specifications including:

  • Parkway (Pedestrian – 300 psf)
  • Light vehicular (AASHTO H-10, 8,000 lbs. wheel load)
  • Full vehicular (AASHTO H-20, 16,000 lbs. wheel load) — recommended for occasional incidental traffic, not for high volume*
  • Aircraft loading criteria per customer specifications (100,000 lbs. – 200,000 lbs. wheel loads)

*For high-volume traffic load, call for recommendations.