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Bridge Design with an Incline

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Main Street Bridge Facts

The Project started in August 2006 and will finish in the summer of 2010. Original Contract Price - $44,111,349.63 Bridge Facts Length – 674.54’ Main Span – 400’ 67’ Tall Arch inclined at 10 degrees Piers: There are 9 each 6’ diameter drilled shafts approximate 70’ in depth at

each pier. There are 235,000 lbs of rebar in each pier. There are 900 CY of concrete in each pier.

Abutments: There are 6 each 6’ diameter drilled shafts approximately 60’ in depth at each Abutment. The footing is 11’ below the water level. There are 240,000 lbs of rebar in each abutment. There are 960 CY of concrete in each abutment.

Superstructure: Vehicular Box is made up of 9 tubs that had to be shipped in two pieces each. Once spliced, the weights ranged from 400,000 lbs to 600,000 lbs. There are 33 floor beams on the north and south sides of the bridge. The North floor beams range in length from 23’ to 55’ and will support and 18” wide pedestrian deck. There are 234,500 bolts that hold the vehicular box and floor beams together. The Arch is made up of 5 sections. We set the two sections at each end which, when spliced, weighted approximately 500,000 lbs and then set the center piece, which weighed 150,000 lbs. There are 2,000 bolts per splice.

Hanger Cables: There are 17 pairs of 3 7/8” hanger cables ranging from 11’ to 57’ in length.

Struts: There are 9 Struts ranging from 10’ to 55’ in length and 4,500 lbs to

22,000 lbs in weight. Decks: There will be approximately 1,600 CY of concrete in both the Vehicular

Deck and the Pedestrian Deck. Park Work: There will be a park built around the project that will include bike paths,

an overlook, retaining walls and an MSE Wall.

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– Three Spans – 131.5’, 400’, 131.5’– Minimum width – 69’, Maximum width – 102.5’– Minimum opening width – 4.5’, Maximum opening width – 33.5’

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– Arch Inclination - 10� from Vertical– Arch Height – 65.5’ above Roadway, 61.5’

above Pedestrian Deck– Roadway Width – 39’ with 5’ Safety Walk– Pedestrian Deck Width – 18’

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���������������� ��� Spillway View

– Rendering

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– Actual

���������������� ��� Bicentennial Park View

– Rendering

– Actual