Tied-Arch Illinois River Bridge, IDOT District 6

Tied-Arch Illinois River Bridge, IDOT District 6
February 6, 2024 Quigg Engineering Inc.

QEI provided an Assistant Resident Engineer who conducted construction inspection, layout, testing, and documentation of the new tied-arch Illinois River Bridge built in Meredosia, Illinois. This $ 75 million, 10-span, 2,120ft long bridge has foundation H piling lengths averaging 87 feet. The tied-arch river span length measures 590ft over the Illinois River.

Client: Illinois Department of Transportation, District 6

Location: Meredosia, Illinois, over the Illinois River

Construction Cost: $75 million

Bridge Facts:
The bridge contains more than 40 million pounds of steel.
• Each of the 22 piers is 11 feet thick and is 30 to 40 feet high.