In Design: King Street over I-395
Cost and schedule ►
The project will rehabilitate the King Street (Route 7) bridge over I-395, which was built in 1970. The five-span structure carries six lanes of traffic, three in the eastbound direction and three in the westbound direction along with a median sidewalk. The bridge consists of a concrete deck, steel superstructure, and concrete substructure.
Proposed repairs include the following:
- Installing An Impressed Current Cathodic Protection (ICCP) system with Latex Modified Concrete (LMC) overlay
- Repair damaged concrete and install an ICCP system in the pier caps
- Repair damaged column concrete and apply Electrochemical Chloride Extraction (ECE) treatment, and seal the treated surface with a breathable sealer
- Repair damaged Abutment concrete, apply ECE treatment, and seal the treated surface with a breathable sealer
- Repair and paint all steel beams and replace bearings
- Reconstruct the substandard bridge barrier/railing
- Repair and/or replace guardrail, mill and overlay approaches
- Minor pedestrian, bicycle and lighting improvements
- Repair roadway pavement and joints
The bridge is almost 50 years old and these repairs, which carry approximately 24,000 vehicles per day, will enhance safety.