Armstrong Tunnel Rehabilitation Project

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Project has concluded

Overview

  • Location: The Armstrong Tunnel goes through the Bluff between Forbes Avenue and Second Avenue in the City of Pittsburgh
  • Current traffic restrictions: Full closure of the inbound tunnel and the sidewalk in the outbound tunnel
  • Project start date: March 4, 2023
  • Estimated traffic restrictions end date: June 2025
  • Scope of work: Concrete repairs; removal of the ceramic tile liner and replacement with fireproof wall panels; masonry cleaning at the tunnel entrances and exits; lighting, electrical, and fire detection and suppression system upgrades; installation of a CCTV monitoring system; and placement of new pavement, curb, sidewalk, signage, and pavement markings.
  • Primary contractor: Mosites Construction Company
  • Estimated cost: $13.1 million

New Lane Configuration

After the tunnels reopen, they will have a new lane configuration to slow traffic and improve safety. Before this project began, there were two 10-foot-wide lanes with no shoulders in each tunnel and a 3-foot, 9-inch sidewalk adjacent to the outbound tunnel. After the project:

  • The inbound tunnel will have one 12-foot lane with 4‑foot shoulders except at the tunnel exit, where there will be two right-turn lanes.
  • The outbound tunnel will have one 12-foot lane with 2- to 3-foot shoulders except at the tunnel exit, where there will be a left‑turn lane and a straight/right-turn lane.
  • The sidewalk will be widened to 6 feet, 3 inches except at its entrances.

Inbound Tunnel Vehicle Detour

  • From Second Avenue, turn right onto Ross Street
  • Turn right onto Forbes Avenue

Outbound Tunnel Sidewalk Pedestrian Detour

Northbound toward Forbes Avenue

  • From Second Avenue, turn right onto Ross Street
  • Turn right onto Forbes Avenue

Southbound toward Second Avenue

  • Same as the northbound detour in the opposite direction

Overview

  • Location: The Armstrong Tunnel goes through the Bluff between Forbes Avenue and Second Avenue in the City of Pittsburgh
  • Current traffic restrictions: Full closure of the inbound tunnel and the sidewalk in the outbound tunnel
  • Project start date: March 4, 2023
  • Estimated traffic restrictions end date: June 2025
  • Scope of work: Concrete repairs; removal of the ceramic tile liner and replacement with fireproof wall panels; masonry cleaning at the tunnel entrances and exits; lighting, electrical, and fire detection and suppression system upgrades; installation of a CCTV monitoring system; and placement of new pavement, curb, sidewalk, signage, and pavement markings.
  • Primary contractor: Mosites Construction Company
  • Estimated cost: $13.1 million

New Lane Configuration

After the tunnels reopen, they will have a new lane configuration to slow traffic and improve safety. Before this project began, there were two 10-foot-wide lanes with no shoulders in each tunnel and a 3-foot, 9-inch sidewalk adjacent to the outbound tunnel. After the project:

  • The inbound tunnel will have one 12-foot lane with 4‑foot shoulders except at the tunnel exit, where there will be two right-turn lanes.
  • The outbound tunnel will have one 12-foot lane with 2- to 3-foot shoulders except at the tunnel exit, where there will be a left‑turn lane and a straight/right-turn lane.
  • The sidewalk will be widened to 6 feet, 3 inches except at its entrances.

Inbound Tunnel Vehicle Detour

  • From Second Avenue, turn right onto Ross Street
  • Turn right onto Forbes Avenue

Outbound Tunnel Sidewalk Pedestrian Detour

Northbound toward Forbes Avenue

  • From Second Avenue, turn right onto Ross Street
  • Turn right onto Forbes Avenue

Southbound toward Second Avenue

  • Same as the northbound detour in the opposite direction

Project has concluded

  • October 12, 2023

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    supporting image

    The stairs located near the Armstrong Tunnel that go from Second Avenue to the Boulevard of the Allies will close for about two months starting on Monday, October 16. Also, the right lane of Forbes Avenue in front of the Armstrong Tunnel will close for about two months starting on Monday, October 23.

    Pedestrians who use the stairs will be detoured using Second Avenue, Ross Street, and Forbes Avenue.

    During the lane closure on Forbes Avenue, the other two lanes on the road will remain open. Drivers might experience traffic delays near the Armstrong Tunnel, and they are urged to use caution in the area.