The Coast Guard is establishing two temporary safety zones for navigable waters within a 120-yard radius of points on the north and south shore of the Houston Ship Channel under the Beltway 8 Bridge (Sam Houston Tollway Ship Channel Bridge) overhead construction. The safety zones are needed to protect personnel, vessels, and the marine environment from potential hazards created by constructing a new bridge. Entry of vessels or persons into these zones are prohibited unless specifically authorized by the Captain of the Port, Sector Houston-Galveston.
Source: Federal Register USCG
Link: Safety Zone; Beltway 8 Bridge Construction, Houston Ship Channel, Houston, TX