Milepost 49 to Milepost 53 Design

Project Photo Album

Special Areas of Interest During the Design Process

  • The bridge over Canadian National & Bessemer Lake Erie Railroad photo

    The bridge over Canadian National & Bessemer Lake Erie Railroad demonstrates a substandard curve that will require widening to the north.

  • Hulton Road under Turnpike photo

    Hulton Road under Turnpike - The horizontal and vertical clearances will meet PennDOT Design Criteria.

  • Repp Road under Turnpike photo

    Repp Road under Turnpike - The horizontal and vertical clearances will meet the Plum Borough’s design requirements.

  • Milltown Road under Turnpike photo

    Milltown Road under Turnpike - The vertical and horizontal clearances will meet the PennDOT Design Criteria.

  • Leechburg Road Viaduct photo

    Leechburg Road Viaduct - In order to maintain four lanes of traffic during the replacement of the bridge over Little Plum Creek on Leechburg Road and Siple Street, the bridge location will likely need to be shifted slightly to the north or south.

  • Unity Trestle Road over Turnpike photo

    Unity Trestle Road over Turnpike - The horizontal clearances will meet the Allegheny County Design Criteria.

  • Miller’s Lane under Turnpike photo

    Miller’s Lane under Turnpike - The horizontal and vertical clearances will meet the Plum Borough’s design requirements.

  • Unity Trestle New Abutment

    Unity Trestle New Abutment - Unity Trestle abutment construction.

  • Unity Trestle Abutment Backfill Consolidation

    Unity Trestle Abutment Backfill Consolidation - Consolidating the backfill at Unity Trestle's abutment.

  • Unity Trestle Bridge Demo 1

    Unity Trestle Bridge Demo - Demolition of the old Unity Trestle Bridge.

  • Unity Trestle Bridge Demo 2

    Unity Trestle Bridge Demo 2 - Demolition of the old Unity Trestle Bridge.

  • Unity Trestle Bridge Demo 3

    Unity Trestle Bridge Demo 3 - Demolition of the old Unity Trestle Bridge.

  • Unity Trestle Bridge Demo 4

    Unity Trestle Bridge Demo 4 - Demolition of the old Unity Trestle Bridge.

  • Unity Trestle Road over Turnpike photo

    Unity Trestle East Bound - View of the slope going Eastbound.

  • Unity Trestle Existing Structure photo

    Unity Trestle Existing Structure - Removal of the previous structure.

  • Unity Trestle New Abutment

    Unity Trestle Abutment Footer - Removal of the Westbound existing abutment footer.

  • Unity Trestle West to East

    New Unity Trestle - View west to east of the new Unity Trestle structure and roadway.

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