I-70 Approach to Veterans Memorial Bridge Unit 1 – Erection Plan
LOCATION: Unit 1 Segment of the I-70 at the Mississippi River Bridge in St. Louis
OWNER: IDOT District 8
TWM’s structural engineers prepared erection plans for Unit 1 of the direct approach to the new Mississippi River bridge. This segment consists of four-span dual structures ranging from 914’ to 991’ long with 9.5’ tall steel plate girders and connects directly to the main spans over the Mississippi River. Engineers developed analytical models for the stages of steel erection, and then used the results to check the strength, stability and girder deflections during lifting and at various stages. They also developed temporary support and bracing details necessary for steel girder erection, and calculated fillet heights for the deck.