|
The Illinois Tollway Interchange between the
North-South and East-West Tollway demonstrates that segmental
concrete structures can be applied to complicated curved geometry
alignments. It also proves that segmental structures are extremely
competitive with steel girders, especially on curved alignments.
The four structures, individually not large enough to justify a
segmental design, were aggregated into one contract of 186,000
square', which was successfully bid against a curved steel I-girder
design, saving the Authority $4.5 million or about 30% of the cost
of the steel bid.
|
|
| Completed: | December 1989 | | Customer: | Illinois State Toll Highway Authority | | Design: | Figg Engineering Group | | Contractor: | Paschen Constructors, Inc. and American Environmental Consulting | | Length: | Four structures totaling 5,434' |
|
|
|
