Pittsburgh Regional Transit’s light rail service in Downtown Pittsburgh will be disrupted from 8 p.m. Friday until the start of service Monday morning while crews repair concrete in the underground tunnels.

The work will take place in the subway tunnels between Steel Plaza and Gateway Station. As a result, light rail service from the South Hills will serve Steel Plaza, then proceed to the normally dormant Penn Station.

Inbound light rail vehicles at Steel Plaza will use the inbound platform of the usually dormant Track 4 instead of the center platform. From Penn Station, riders who want to continue Downtown to the Gateway Station or the North Shore will board shuttle buses that will stop at Wood Street Station during working hours and Gateway Station. At Gateway, riders headed to the North Shore can board light rail vehicles again.

Riders from the North Shore will find similar restrictions with service stopping at Gateway.

Shuttle buses will take riders from Gateway to Penn Station.

Ed covers transportation at the Pittsburgh Post-Gazette, but he's currently on strike. Email him at eblazina@unionprogress.com.

Ed Blazina

Ed covers transportation at the Pittsburgh Post-Gazette, but he's currently on strike. Email him at eblazina@unionprogress.com.