Twin Bridges Route 435 Project
Project Overview
The Interstate 84 Section 282 project includes the replacement of 2 mainline bridges carrying Interstate 84 eastbound & westbound over Roaring Brook and the active Delaware, Lackawanna and Western (DL&W) Railroad and the reconfiguration of Exit 2 with Route 435 in Dunmore Borough and Roaring Brook Township, Lackawanna County. The current left-hand exit to Route 435 southbound will be reconfigured with a more conventional right-hand exit that includes a structure carrying the Ramp over both Interstate 84 eatsbound & westbound.
The difficult project site includes an active railroad, Roaring Brook, and steep terrain requiring the construction of several access roads, staging areas, crane pads, and a temporary stream crossing of Roaring Brook for construction access, erection, and removal of the existing bridges.
Project Updates
Work Completed in Construction Year 2020
Phase 1 Construction:
The purpose of Phase 1 Construction was to construct a 12-foot travel lane in the median on the eastern side of the Interstate 84 Eastbound (EB) Bridge. Once constructed, the right lane on Interstate 84 (EB) was closed to traffic and traffic was shifted into the left lane and the newly constructed lane. The right lane is being used to access the Staging Area and Temporary Access Road.
Interstate 84 (EB)
- Constructed the Full Depth Pavement Structure
- Constructed the new Median Crossover
- Installed Inlets and Drainage Network
- Constructed Drainage Ditches
- Removed Existing Sign Structure
- Constructed (2) Staging Areas
- Constructed (5) Temporary Access Roads
- Access to Interstate 84 and State Route 435
- Constructed Temporary Causeway to E&WV Bridge
-
Removed Existing Timber Ties and Constructed New Wooden Deck
- Constructed Bioretention Basin #1
- Constructed Detention Basin #2
- Constructed Trapezoidal Drainage Ditches and Drainage Network
- Installed Temporary Slope Pipe and Outlet to Roaring Brook
- Constructed a temporary pavement structure to accommodate traffic during the construction of the Fly-Over Bridge Pier.
- Shoulder Reconstruction (Interstate 84 WB)
- Shoulder Reconstruction (State Route 435 SB)
- Contractor completed the construction of the Pier
Pier 2
- Contractor completed the construction of the Pier
- Contractor installed temporary shoring and excavated to the bottom elevation of the footing.
- Contractor completed the 48" Diameter Caissons.
- Remaining work includes the following:
- FRP Footing
- FRP Column
- FRP Pier Cap
- Complete Phase 1A in the Fall of 2021
Construction Year 2021 and 2022
Phase 2 Construction:
The purpose of Phase 2 Construction is to construct a portion of the new Interstate 84 (EB) Roadway and Bridge on the new alignment in the median between Interstate 84 Eastbound and Westbound. Traffic will use the newly constructed roadway and bridge during the demolition of the existing Interstate 84 (EB) Bridge and the construction of the remaining portion of the new Interstate 84 (EB) Bridge and Roadway in Phase 3.
Interstate 84 (EB) Roadway
- The Contractor started grading the new roadway.
- The Contractor started the installation of the drainage network.
- Installed Inlets, Pipes, and Ditches
- Remaining work includes the following:
- Construct Full Depth Pavement Structure
- Install Guide Rail and Permanent Signs
- Install ITS/CCTV System
- Contractor completed Abutment 1 (Eastern Side)
- Contractor started the MSE Wall @ Abutment 1
Remaining work includes the following:
- Construct Bridge Abutments 2 (Western Side)
- Construct MSE Walls @ Abut 2
- Construct Bridge Superstructure
State Route 435 Fly-Over Bridge
- Contractor constructed the pavement structure for the Temporary Exit Ramp.
- Contractor excavated and removed existing wing wall on bridge over SR 435 Ramp. Contractor going to start the drilling of the 48" Diameter Caissons for the Fly-Over Bridge Pier.
- Remaining work includes the construction of the Fly-Over Bridge Pier.
Complete Phase 2 in the Fall of 2022
Construction Year 2022 and 2023
Phase 3 Construction:
The purpose of Phase 3 Construction is to demo the existing Interstate 84 (EB) Bridge and start the construction of the remaining portion of the new Interstate 84 (EB) Bridge and Roadway. The State Route 435 Exit Ramps and Fly-Over Bridge will also be constructed in this phase. This work will also include the construction of multiple MSE and Retaining walls.
Resources
Project Information
County: Lackawanna
Project Type: Bridge Replacement
End Month: Spring 2026
Last Updated: July 18, 2023
Project Statistics
Cost: $113.2 million
Contractor: J.D. Eckman, Inc.
Contact Information
PennDot Project Manager, Susan Williams
susawillia@state.pa.us
PennDOT Press Officer,
Jessica Ruddy
570-963-4044