I-76 Viaducts

Overview

I-76 Viaduct Repairs

PROJECT INFORMATION

PROJECT OVERVIEW


Project Summary: Repairs to two I-76 (Schuylkill Expressway) viaducts
Project Locations: Center City, Philadelphia; West Conshohocken, Montgomery County
Construction Contract Amount: $39,776,919
Contractor:J.D. Eckman, Inc., Atglen, PA
Construction Start: Spring 2019
Construction Completion: Fall 2020
Design Engineering: HDR, Inc., Plymouth Meeting, PA
Construction Management: Urban Engineers, Philadelphia, PA

Project Description

Satellite image of Philadelphia viaduct
Image: Google Maps

Rehabilitation of the I-76 (Schuylkill Expressway) viaduct in Center City Philadelphia (top image) includes:

  • Repairing or replacing the concrete deck’s expansion joints
  • Repairing deteriorated sections of concrete deck
  • Rehabilitating piers, columns and other sub-structure components
  • Repairing the viaduct’s drainage system
  • Repaving the deck with a concrete overlay.

Rehabilitation of the I-76 (Schuylkill Expressway) viaduct in West Conshohocken (bottom image) includes:

  • Replacing the neoprene strip seal expansion joints
  • Resealing the longitudinal median joint
  • Repairing superstructure steel components (stringers and floor beams)
  • Cleaning and lubricating abutment bearings
  • Repairing Pier 1 bearings
Satellite image of Conshohocken project
Image: Google Maps

Travel During Construction

I-76 (Schuylkill Expressway) at both locations carries two lanes of traffic in each direction with Average Daily Traffic (ADT) volumes of approximately 130,000 vehicles in Center City and 67,000 ADT in West Conshohocken.

Repairs at both locations will require overnight or weekend lane closures. In addition, certain on and off-ramps in the Philadelphia viaduct’s work area will be closed and detoured.

At various stages of construction on the long viaduct in Philadelphia, the expressway will be completely closed in either the eastbound or westbound direction within the work area during the overnight hours or weekends.

An anticipated five full closures will take place during each of the four stages of deck rehabilitation on the Philadelphia structure. 

These closures will be timed to avoid taking place during university functions, events at the sports complex in South Philadelphia, and other high traffic occasions.

In Summary

  • I-76 (Schuylkill Expressway) in Center City Philadelphia will be under construction beginning in Spring 2019 until late 2020. The expressway in West Conshohocken will be under construction in 2020. No work is expected to take place over the winter from late 2019 to early 2020.
  • Construction during the four stages of deck rehabilitation on the Philadelphia viaduct will require full closures of either the eastbound or westbound I-76 (Schuylkill Expressway) for at least five weekends per stage.
  • I-76 (Schuylkill Expressway) in Philadelphia will have single lane closures in one direction for at least 20 weekends  during the 2019 and 2020 construction seasons.
  • Single-lane closures in one direction may be in place at night and on weekends on the Philadelphia viaduct during the 2019 and 2020 construction seasons, or on the West Conshohocken viaduct during the 2019  construction season. 
  • On and/or off-ramps in the Philadelphia viaduct work zone will be closed periodically when lanes are closed.

Conshohocken Viaduct Construction Stages

I-76 (Schuylkill Expressway) in West Conshohocken, Montgomery County, will be under construction from early 2020 until late 2020.

Single Lane Closures Eastbound or Westbound will be in place Monday nights through Saturday nights from 9:00 PM to 5:00 AM.

Center City Viaduct Construction Stages

Spring 2019 – Dec 2020

Deck Rehab: Pre-Stage 1: Traffic impacts consist of I-76 westbound right lane closure during overnight hours. One of the following ramps may be closed during these hours:
University Avenue/Exit 346B westbound On Ramp; South Street/Exit 346B On Ramp; 30th Street Exit 345. 
April thru July 2019
Deck Rehab: Stage 1: Traffic impacts consist of I-76 eastbound right lane and eastbound full closures during overnight hours. Weekend eastbound right lane closures for five weekends with overnight eastbound full closures. The following ramps may be closed when the right lane is closed:
University Avenue/Exit 346B; South Street/Exit 345A On Ramp; Walnut Street On Ramp.
July thru Oct 2019
Deck Rehab: Stage 2: Traffic impacts consist of I-76 eastbound left lane and eastbound full closures during overnight hours. Weekend eastbound left lane closures for five weekends with overnight eastbound closures. The following ramps may be closed when the left lane is closed:
South Street/Exit 346 On Ramp; South Street/Exit 346A; Walnut Street On Ramp.
April thru July 2020
Deck Rehab: Stage 3: Traffic impacts consist of I-76 westbound right lane and westbound full closures during overnight hours. Weekend westbound right lane closures for five weekends with overnight westbound full closures. The following ramps may be closed when the right lane is closed:
University Avenue/Exit 346B West On Ramp; South Street/Exit 456A On Ramp; 30th Street/Exit 345; Vine Expressway 676 East/Exit 344 (limited to two weekends).
July thru Oct 2020
Deck Rehab: Stage 4: Traffic impacts consist of I-76 westbound left lane and westbound full closures during overnight hours. Weekend westbound left lane closures for five weekends with overnight westbound full closures. The following ramps may be closed when the left lane is closed:
University Avenue/Exit 346B West On Ramp; South Street/Exit 346A; South Street On Ramp. 

Detours

Detours will be in place during ramp closures and full closures. The local and regional road network will be utilized for the detours.

DVRPC Mobility Alternatives Program