Manhole covers in the United States are typically made of metal or concrete and are round , rectangular or square

Lids in the United States are not colored. Often, color (usually blue, for water lids) is added after the lid is manufactured , and gold lids can also be found

Usually, city symbols do not appear on the covers, but there are cases (especially in small cities) where the covers bear the city or county symbol , ,

The purpose of the cover appears many times: water , sewage , electricity , etc.
Communication manholes are often characterized by a cover in a unique format consisting of a background of many hexagons and the logo of the communication company in the center .

There are covers made by artists, such as a project by the City of Seattle, where artists were asked to design covers ,
Other covers contain images or illustrations of landscapes or historical places , and more.

Some covers belong to commercial entities: Nintendo , Macy’s and more.

Manufacturers
Usually the covers are made by manufacturers from the United States: ej (International) , Christy Concrete , Armorcast and others.
There are a few covers made by Canadian manufacturers:

Many covers are made in India (probably by branches of American companies, or vice versa)

Standards
Very few covers include standard markings. The few use ANSI (77) TIER 15 , or ANSI (77) TIER 8