The East Busway is closed between the Strip District and Oakland following an overnight landslide that blocked the road.
All buses are detouring via the Neville Street ramp through North Oakland, Bloomfield and the Strip District, where they are rejoining the busway via the 26th Street ramp. Pittsburgh Regional Transit says the detour is adding 15 to 20 minutes to each trip.
In a statement, spokesperson Adam Brandolph said the landslide is believed to have been caused by a water main break in the hillside above the busway. Crews are working to clear it, but there is no estimate on when the busway will reopen.