Downtown St. Louis “City Arch River” Bridge Project Moving Along

MAR 6, 2014: Despite the harsh winter weather, construction of the Park Over the Highway (POTH) project in downtown St. Louis is progressing along on schedule.  This landmark project includes a 280-foot land bridge that will cross Interstate 70 and connect the downtown area with the Gateway Arch grounds. Crawford, Murphy & Tilly, Inc. (CMT) is serving as project manager for design of this POTH bridge, in addition to some significant City street grid changes that will improve traffic and pedestrian safety in the area.

“With the new Stan Musial bridge (carrying I-70 over the Mississippi River) opening last month and all of the projects going on downtown, this is a really exciting time for the city of St. Louis. A lot of improvements are being made that will positively impact people who travel in the area and who come to visit,” said Greg Law, PE, project manager for POTH.

Construction of the Park Over the River Highway project in downtown St. Louis is on schedule.

Construction of the Park Over the River Highway project in downtown St. Louis is on schedule.

Construction on the POTH bridge started in February.  Piles for the abutments are currently being completed, while Interstate 70 and Memorial Drive both remain open to traffic. POTH Bridge construction is slated to be completed by late summer of this year.

The new Walnut Street “entry” into downtown was the first improvement that started up and is expected to be open to traffic on March 16.  CMT designed a new 100-foot-wide Walnut Street Bridge to replace an existing 50-foot-wide structure that was demolished in mid-January.  Once Walnut Street opens, two more existing bridges will be demolished that will allow the POTH bridge to be completed.  At that same time, the Pine Street Bridge, which is being converted for pedestrian use, will discontinue vehicle access.

In April, the remaining City street grid improvements will begin with completion expected in the fall of 2014.

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