TRC

I-49 North (I-220 to MLK, Jr. Drive)

Complex superstructure design is delivered in accelerated fashion by TRC to help secure $140 million in at-risk funding.

Client

Louisiana Department of Transportation and Development

Project Location

Caddo Parish, LA

TRC was selected by the Louisiana Department of Transportation and Development to provide all engineering services associated with the provision of Preliminary Bridge Plans, Final Bridge Plans and as-designed Load Ratings for a fully-controlled interstate class roadway (I-49) on new alignment in northeast Louisiana. The approximately $170 million project begins at I-49’s proposed interchange with I-220, and proceeds in a northerly direction for approximately one mile to a proposed interchange with Martin Luther King, Jr. Drive (LA 3194). The project included the design of a portion of the I-49/I-220 interchange and a partial cloverleaf interchange at Martin Luther King, Jr. Drive

The project involved the design and load rating for a total of seven (7) structures, along with a geometric interchange alignment evaluation. Complex, dual superstructure design alternatives were provided using both post-tensioned segmental concrete box girders and trapezoidal steel box girders, with the segmental option ultimately being accepted as the low bid. A variety of context-sensitive aesthetic concepts were also included within the design of the structures that resulted in a first of its kind architecturally-enhanced interchange for the state of Louisiana. Such enhancements included the incorporation of decorative lighting, decorative panels, rustications, and alternative coating system colors. As part of that effort, a Call-to-Artist Proposal was developed for the Shreveport Regional Arts Council (SHRC) for use in hiring an artist to develop the artwork for the Decorative Panels.

With approximately $140 million in federal funding for the project being at risk, TRC was tasked with accelerating its efforts so that the design could be completed in one year versus the three that a project of this magnitude and complexity would normally be expected to take. This challenging completion goal was achieved and the at-risk funding was ultimately secured by the state of Louisiana to proceed with the project which is presently under construction.

See related services

Bridge Studies and Design

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