October

Manholes play a critical role in virtually every type of underground infrastructure. They grant utility workers swift, easy, and safe access to an array of systems, enabling them to conduct essential inspections and maintenance. However, not all manholes are built the same.  They differ in design and construction, from manufacturing […]

Manholes have been in use in the US since about the mid-19th century. While their purpose hasn’t changed for nearly 200 years, their construction and design significantly evolved to reflect the ever-growing needs of the modern world. Today, there are an estimated 20 million manholes throughout the US, most of […]