Drivers who commute late night and early morning hours along Highway 101 and Highway 1 should brace for closures this week.
Short-term, nighttime closures of Highway 101 and southbound Highway 1 are scheduled for the early morning hours of Tuesday and Wednesady to allow crews to install overhead signage in preparation for the opening of the new Doyle Drive, according to spokespeople for the project, which is also known as the Presidio Parkway project.
Partial closures are scheduled for 10 p.m. Tuesday with full closures scheduled 1 a.m. to 3 a.m. Wednesday.
In 1989, the Bay Area’s Loma Prieta earthquake severely damaged the structural integrity of the Doyle Drive ramp, in the Presidio.
Subsequent reconstruction of Doyle Drive occurred in two phases starting in 2008. The new road is now also known as the Presidio Parkway. The new tunnels, dubbed the Main Post and Battery tunnels, have been alternatingly open to traffic during construction.
The planned closure hours this week were selected at times when traffic volume is at its lowest, the Presidio Parkway project said. The project’s spokespeople also advised, “Please watch for changeable message signs and detour directions and expect the use of bright lights and heavy equipment.”
Another closure is planned, this time for a 79-hour period, from 10 p.m. July 9 to 5 a.m. July 13.