Custom Inlet & Manhole Risers

Morgan’s Welding specializes in manufacturing custom components for municipal roadway and highway applications. We provide standard, off-the-shelf, PennDOT-approved products and specialized custom components, including inlet and manhole risers. Morgan’s Welding supports clients throughout the United States, and frequently supplies state-approved risers to Maryland, Virginia, and New York.

Specifications

Finishes Bituminous Coating (Standard)
Additional Coating Options: Galvanization, Epoxy
Materials Carbon Steel (Standard)
Additional Material Options: Stainless Steel, Aluminum
Mounting Bolting anchors (size varies based on installation requirements)
Coating Thickness Customized based on application requirements
Load Rating Varies based on dimensions and design; customized based on application requirements
Plate Thickness Customized based on application requirements
Rise/Height Varies based on custom specifications or the amount the roadway height increases

When Risers Are Needed

Morgan’s Welding’s custom risers are manufactured to sit over existing inlets and manholes and are secured with bolting anchors. They’re required in any repaving project where the roadway height is increased.
close up on rain water flowing into manhole on the street
Sewer manhole on the urban asphalt road. Closeup photo

Benefits

  • Improves Drainage & Prevents Roadway Damage: Manhole and inlet risers prevent dips in the roadway that can collect standing water over time and potentially cause deterioration in the roadway materials, whether asphalt or concrete.
  • Installation Ease: Morgan’s Welding’s risers are bolted on and can be easily removed for future resurfacing and repaving projects.
  • Reduces Project Costs: Risers eliminate the costs associated with rebuilding the existing inlet box, throat, and frame.
  • Increases Safety: Pedestrians and cyclists are kept safe because the manhole or inlet height increases with the roadway, eliminating hazardous lips.
  • Exact Fit: Every riser is customized to project requirements. That means the overlay thickness is exact, risers can be installed on non-standard structures, the bolt pattern matches the existing frame, the load class is chosen for the exposure, and different shapes, including sloped transitions and multi-grate assemblies, can be accommodated.
  • Corrosion-Resistance: Morgan’s Welding applies a bituminous coating to all manhole and inlet risers, custom or standard, to provide exceptional protection against moisture, deicing salt, and stormwater.
  • Compatible With Asphalt: The standard bituminous coatings are asphalt-based and create a tighter seal between casting and pavement to reduce water intrusion risks.

Information to Include for Custom Projects

Morgan’s Welding provides design assistance and recommendations as needed, especially if you don’t already have a drawing or rendering. For custom projects, please supply the following information:
  • Number of risers required
  • Field-verified dimensions
  • Agency standard of the original casting
  • Opening diameter (manholes only)
  • Opening shape (manholes only)
  • Frame material and condition
  • Photos of the existing structures
  • Rise/height per structure
  • Gutter line and finished grade elevations
  • Traffic class and load rating
  • Buy America requirements
manhole

Let’s Start Discussing Your Municipal Based Project

Don’t hesitate. Take the next step to work with Morgan’s Welding to build your custom grate and frame solution.

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