All three Downtown T stations will be closed today and tomorrow, and the Gateway station is closing indefinitely while the rail line is extended beneath the Allegheny River.

Subway construction includes a new station beneath the intersection of Liberty Avenue and Stanwix Street. Gateway is closing as work on the North Shore Connector continues into 2012.

The Wood Street T station is the closest weekday alternative for light-rail riders. It is about three blocks from the Gateway station.

Riders should board at Wood Street on the following platforms:

42C, 42S and 52: Board and discharge on the outbound platform.

47L and 47S: Board and discharge on the inbound platform.

All rail cars will reverse direction at Wood Street Station, and riders on the last car will not be able to exit at stops without fare booth attendants. This pertains especially to riders who are accustomed to boarding the inbound cars at First Avenue or Steel Plaza in the afternoon and remaining seated as the cars loop and head outbound.

Additionally, other Downtown T stations will be closing on certain upcoming weekends for construction work. The schedule is as follows:

• Today and tomorrow: Gateway, Wood Street and Steel Plaza stations will close. Bus shuttles will serve street-level stops outside Gateway, Wood Street and Steel Plaza to First Avenue station.

• Nov. 7-8: Gateway, Wood Street and Steel Plaza will close. Bus shuttles will serve Wood Street and Steel Plaza to First Avenue

• Nov. 14-15: Gateway and Wood Street closed.

• Nov. 21-22: Gateway and Wood Street closed.

• Nov. 28-29: Gateway closed. All other Downtown stations will be open.

Also, riders may travel for free within Downtown at all times using regular buses.

For more information, visit portauthority.org or contact Port Authority customer service at 412-442-2000.

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