Specialized in civil, structural, and transportation projects
Democrat Road, CR673, over I-295 Rehabilitation
Project Owner :
     New Jersey Department of Transportation
Location :
     Gloucester County, New Jersey
Client(s) :
     New Jersey Department of Transportation
    
Services :
     Bridge Engineering
     Civil Engineering
     Transportation Engineering
     Construction Support Services
    
    
Project Name   
Democrat Road, CR673, over I-295 Rehabilitation

Project Description

As Designer of Record, SJH provided all engineering and design services associated with the Democrat Road over I-295 MP 16.42 Rehabilitation, which replaced the deck slab of the existing bridge. Built in 1953, the bridge is a two span simply supported, composite riveted plate steel stringer structure supported by concrete abutments and piers. The bridge deck slab was severely deteriorated with many visible spalls and rated ‘Poor’ (4) in Structure Inventory & Appraisal condition rating. The deck slab was deemed functionally obsolete and was in need of replacement.

For this project SJH was responsible for managing specialty subconsultants, preparing a Design Exception Report, utility coordination, and providing a complete set of construction documents. The project involved replacing the deck slab with minimum environmental and community impacts. Incidental work included replacement of the approach slabs at both ends of the bridge, isolated repairs of cracks and spalls in substructure elements, and replacement of guiderail / fencing / curbing. Work also included milling and overlay of the approach roadways. Due to low traffic volume on this section of Democrat Road and the availability of feasible detours utilizing I295, NJDOT accelerated the reconstruction by full closure of the bridge. We prepared all construction documents and permit coordination. The existing single spans are made continuous for live load.

Rather than merely calling for an in-kind deck replacement, SJH evaluated the feasibility of making the superstructure up to current AASHTO standards for HL-93 live load, and implemented a time saving, single-step replacement solution. The continuous structure joints required in cases of staged construction. We developed traffic control plans per MUTCD and NJDOT Standard Roadway Construction and Traffic Control Details. We provided construction support services throughout completion of this project, including site visits, clarifications, and attending meetings as necessary.

SJH completed design ahead of the schedule, allowing NJDOT to advertise and award the contract earlier than scheduled. The project was recognized with a 2014 Engineering Excellence – Distinguished Award from the American Council of Engineering Companies of New Jersey.


 
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