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In 1992, MoDOT and IDOT embarked on an environmental study (EIS) to look for solutions. The resulting EIS very clearly spelled out that the problem was the Poplar Street Bridge (PSB). The PSB is one of only two bridges in the nation that carry three interstates (I-70, I-55, I-64) across a river.

The construction of the Poplar Street Bridge is a fascinating bit of history. While certainly not as revolutionary as the Eads Bridge, the next span just to the north, the Poplar Street Bridge was innovative in its own time and represents an important moment in mid-century bridge construction.

18.4K subscribers. Subscribe. 4.4K views 3 years ago. Built in 1967, the Poplar Street Bridge carries Interstates 55 and 64 across the Mississippi River at downtown St. Louis.

Drivers heading east over the Poplar Street Bridge can expect "extensive delays" during rush hour starting Thursday, according to the Illinois Department of Transportation.

Cost-Effective Innovations Improve Durability and Ease Traffic. St. Louis’ Poplar Street Bridge was a groundbreaking achievement when it opened in 1967 — the first long-span bridge utilizing an orthotropic steel deck plate in the United States and the only bridge to carry three interstates.

The Poplar Street Bridge is 50 year old five span (300’-500’- 600’-500’-265’) 2165’ long structure which carries I-64, I- 55 and I-70 over the Mississippi River in downtown St. Louis and connects Missouri and Illinois.

Mammoet recently completed the second-largest bridge slide in US history on the Poplar Street Bridge, which connects St. Louis, Missouri, and East St. Louis, Illinois. The move will make way for a fifth eastbound travel lane, which will be added to the bridge to allow for increased travel capacity.

ST. LOUIS — Two westbound lanes of Interstate 64/55 at the Poplar Street Bridge will be closed for about a month starting this weekend to repair the bridge.