Wildwood, Missouri
Client:
City of Wildwood
The City of Wildwood retained Horner & Shifrin to develop plans and specifications for the construction of a new bridge at Strecker Road. The project was further complicated by the requirement to keep traffic open at all times during construction. A failing masonry retaining wall was retaining loads alongside the bridge. In combination with bridge construction, loads from the road were to be retained with a bioengineered geogrid wall structure, designed by Terra Technologies.
The design concept combines the use of traditional rock gabions for toe reinforcement with traditional global stabilization with geogrid. The organic face of the steepened slope was planted with native grasses and wildflowers, and all plants were protected from scour with the use of a wire turf reinforced matrix. The design concept could be utilized in all seasons, further negating an exposure period for suspending construction during unfavorable planting seasons.
In association with the biotechnical-engineered retaining wall, additional streambank restoration improvements were constructed upstream and downstream from the newly located bridge. Combining the economical use of biodegradable coir logs, erosion control blanket, bonded fiber matrix hydraulic mulching technology, and plantings, several hundred lineal feet of restoration accompanied the bridge replacement.
The plans were submitted for MoDOT approval in August 2002. Construction was successfully completed in the Fall of 2003. |
