I-84 Bridge Deck Replacement
Weber County, UT

This project included repairs and improvements to a 5 mile section of I-84 in Weber Canyon, including the rapid bridge deck replacement for three structures.  This portion of I-84 is a critical route for freight trucks and experiences high traffic volumes year round.  As a result, Accelerated Bridge Construction (ABC) techniques were required by the client to design and construct the bridges in a single construction season.  The existing cast-in-place bridge decks will be removed and the entire replacement structure will be pre-cast panels placed on the original girders and sub-structure. 

The three structures ranged from 401’ to 583’ in length and are reverse spiral in shape. Bridge decks were designed of precast concrete panels to be placed on steel and concrete girders with a continuous overlay.  The reverse spiral shape and continuously changing elevations required precision in the design, geometry of the arrangement of pre-cast panels. Each of the bridges spans the Weber river and appropriate environmental concerns were addressed.  Additionally, one of the bridges spanned the Weber Power Station and two bridges spanned UPRR tracks.  Each of these items was taken into consideration during the design process to ensure the final design was constructible, effective and efficient.  In addition to being complicated in design, the accelerated schedule required that all three bridges be designed in approximately 2 months. 

R₂H leveraged the combined expertise of the company and utilized personnel in multiple locations.  Under the Project Management and direction of Robert C. Hendershot, communication and work allocation between the offices was successful.  Working in close collaboration with the client and other consultants, R2H was able to deliver a quality project on time and on budget.