Composite Manhole Covers & Frames

US Manufacturer of Composite Covers and Frames for Sewers, Grease Traps, Electric Transmission Access & Broadband Utilities

Just CAP That!®

the first compression molded, traffic-rated assembly that is Made-In-The-USA.

Composite Sewer Caps Cure Iron Headaches

Composite Access Products (CAP)™  manufactures composite covers and frames with high-speed, high pressure, compression molding.  CAP covers pass the AASHTO M 306 Proof Load test requirements for American highways with the rating of HS-25.  CAP is THE ONLY US composite cover manufacture to receive a state DOT approval letter for use "within roadway" zones.

click here to see reasons for composite covers

Compression Molding in the USA!

CAP's traffic-rated, compression-molded, composite manhole covers are Made In The USA.  If the cover does not clearly say "Made In USA" on the cover top then the cover is not American, and is most likely Chinese.  If no Country of Origin is on top, the cover is violating US law-19 U.S.C. §1304(e).  Where is your municipality putting US tax dollars?

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CAP RF composite manhole cover with RFID for asset tracking, GIS, data storage

CAP's Newest Innovation - The CAP RF ®.

First radio frequency ID encapsulated into a traffic-rated composite manhole cover for asset tracking, locating the cover and data storage at point of use.  See more details about the advantages of encapsulation and uses of the CAP RF at this page.

click here to learn about CAP's newest innovation

CAP Solves Iron Problems


Corrosion in manhole covers

CAP covers prevent iron corrosion which weakens and fuses covers shut.

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Theft of manhole covers

CAP eliminates the root cause of iron manhole cover theft: the scrap metal content.

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Back Injuries

Back injuries lifting manhole covers

Heavy Iron Covers weigh 2x-3x composite Covers. Reduce back injuries with CAP

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Falls and Liability

Falls and lawsuits for open manholes

Protect pedestrian safety and potential liability from falls into open manholes.

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Burns and Electrocution

Burns and Electrocution from manhole covers

Composites insulate pets and people unlike rapid electric/heat conductivity with iron.

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Attractive Stone-looking Composite Manhole Covers

Pigmented covers and the CAP STONE eliminate black/rusted "birth marks" in pavers

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Infiltration and Inflow

Infiltration and Inflow in manhole covers

Precisely mated composite covers and frames reduce path of water breach into system.  Heavy iron covers tear gaskets easier.

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Shipping Cost

Shipping cost reduction with composite manhole covers

Heavy iron covers reach weight limits of trucks before volume limits - thus lighter composite covers require fewer trucks.

Radio & Cellular Wave Blockage

CAP composite manhole covers good for RF and AMR

Transmission requires penetrating antenna with iron covers, but pass through composite covers.  Antenna shields are not necessary with composites.

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Iron Manhole Cover Costs Beyond The Price Tag

Do you amortize replacement covers, installation, tack welding, special locks, legal fees, and all the other costs associated with not using composites for manhole covers, sewer lids, and drains?  For the real cost comparison, assign a value and allocate over your annual cover purchases.  Pennsylvania awarded $85 million in 2008 (see "Falling Injury and Liability Elimination")  Just this one case added hundreds (perhaps thousands) of dollars per cover in that state.

Hidden Costs of Iron Covers

  • Replacement Sewer Covers after Theft
  • Frequent Lid Replacements and Re-Installation Teams
  • Insurance Premiums For Citizen Injury Lawsuits
  • Legal Fees
  • Public Relations Shame and Embarrassment
  • Traffic Back-ups
  • Tack Welding
  • Workman's Compensation Claims for Back Injuries from Lifting Heavy Sewer Lids
  • Disability Costs
  • Investment in Specialized Sewer Cap Lifting Tools
  • Overtime for Inefficient Productivity
  • Employee Morale and Turnover


CAP recently received stunning data from just one medium size utility company in the Southwest of the USA- this utility suffers from 10-15 iron manhole cover lifting related back strains per year with the average costs reaching $70,000 per incident.  That means this one utility spends approximately $750,000 - $1.1 million PER YEAR for injury claims lifting iron manhole covers!  Spread over 1,000 covers they purchase per year, this adds about $750 to $1100 per cover to the price tag.

Want to improve employee and pedestrian safety while saving money on total cost beyond the price tag?