The future I-49 project from Lafayette to New Orleans is one of the most exciting infrastructure projects under design by the DOTD. DDG is currently under contract with Stantec, the project’s Prime Consultant, to complete the detailed topographic survey information for the DOTD’s future I-49 corridor through the urban center of Lafayette, LA. This survey work includes the collection of topographic information including specific and detailed drainage information through the existing dense and congested Highway 90 corridor. DDG’s scope of work included surveying approximately 3 miles of Highway 90 from Interstate 10 south to East Taft Street. This survey also included numerous side streets and adjacent developed areas as required not only to facilitate geometric improvements design but also subsurface drainage data collection to facilitate numerous drainage improvements throughout the corridor. This included a combination of subsurface and open channel systems ranging in size from small culvert crossings to significant box culverts and coulees
In addition to the collection of standard topographic information to be utilized in the design of geometric and drainage improvements for the project, the surveying scope also includes the preparation of boundary and right-of-way plats to be used by the DOTD to acquire any required ROWs.
Due to the dense site constrictions in conjunction with high traffic volumes in the area, DDG is working closely with the Prime Consultant as well as the DOTD Headquarters and District to coordinate road closures and night work to ensure the safety of all field personnel. These efforts have recently been double considering DDG recently increased scope request on behalf of the DOTD to collect expanded data relative to existing drainage infrastructure. This expanded scope would include the same combination of subsurface and open channel systems ranging in size from small culvert crossings to significant box culverts and coulees expanded into adjacent project areas beyond the initial surveying scope.