Express-Tek partners with Tenebris for 75-mile project

May 24, 2021

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Tenebris Fiber, a dark fiber provider in Virginia, recently announced the development of a new dark fiber network in northern Virginia, partnering with Express-Tek to begin phase one.

Express-Tek is providing design, engineering, and permitting services critical to the implementation of the project. With extensive knowledge of the area and permitting jurisdictions, Express-Tek is essential to complete the project in a timely manner.

The first phase involves design and permitting of 75 miles of new conduit and fiber in Loudoun, Prince William, and Fairfax Counties.

This carrier class network will provide dark fiber access from the communities of Ashburn to Manassas, benefitting schools, hospitals, hyperscalers, local government, data centers and more.

“Express-Tek has been working with Tenebris since its inception,” Stephen Brown, Executive Vice President of Express Technologies, said. “We are excited to help Tenebris grow into a major dark fiber company in this region.”

“From day one we knew using Express Technologies while we developed our route would be critical,” Sue Hageman, CEO of Tenebris Fiber, said. “Their local knowledge is unparallel and we are excited to move to the next phase with Express and look forward to continuing our long-term working relationship.”

About Express-Tek

Express-Tek is an all-in-one service that designs, engineers, permits, and builds fiber optic networks and telecom infrastructure. Since 2002, Express-Tek has risen to become a leader in the telecom industry with over 50 years of combined experience. To learn more, visit

About Tenebris Fiber

Tenebris is a neutral dark fiber provider offering carrier-class network infrastructure connecting the new subsea landing stations of Virginia Beach to the private and public data centers along the path to Northern Virginia. Tenebris’ vision will open up new much-needed subsea and middle-mile network in Virginia. For more information, please visit